Home / 1,328,712,821.70-1,993,069,232.55-812,152,169.70

Finding the Fourth Proportional to 1,328,712,821.70, 1,993,069,232.55 and 812,152,169.70

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Solution

The fourth proportional to 1,328,712,821.70, 1,993,069,232.55 and 812,152,169.70 is: 1,218,228,254.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,712,821.70 : 1,993,069,232.55 = 812,152,169.70 : x
  2. Step 2: Convert to fraction form
    1,328,712,821.70/1,993,069,232.55 = 812,152,169.70/x
  3. Step 3: Cross multiply
    1,328,712,821.70x = 1,993,069,232.55 × 812,152,169.70
  4. Step 4: Simplify right side
    1,328,712,821.70x = 1,618,675,501,577,796,352
  5. Step 5: Solve for x
    x = 1,618,675,501,577,796,352/1,328,712,821.70
  6. Step 6: Final answer
    x = 1,218,228,254.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.