Home / 1,138,812,337.12-1,571,679,389.12-656,020,944.76

Finding the Fourth Proportional to 1,138,812,337.12, 1,571,679,389.12 and 656,020,944.76

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Solution

The fourth proportional to 1,138,812,337.12, 1,571,679,389.12 and 656,020,944.76 is: 905,377,088.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,812,337.12 : 1,571,679,389.12 = 656,020,944.76 : x
  2. Step 2: Convert to fraction form
    1,138,812,337.12/1,571,679,389.12 = 656,020,944.76/x
  3. Step 3: Cross multiply
    1,138,812,337.12x = 1,571,679,389.12 × 656,020,944.76
  4. Step 4: Simplify right side
    1,138,812,337.12x = 1,031,054,597,710,321,920
  5. Step 5: Solve for x
    x = 1,031,054,597,710,321,920/1,138,812,337.12
  6. Step 6: Final answer
    x = 905,377,088.13

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Half scale
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Double scale
Find fourth proportional to 1,138,812,338.12, 1,571,679,390.50 and 656,020,945.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.