Home / 1,200,399,180.87-1,656,724,145.41-691,664,459.30

Finding the Fourth Proportional to 1,200,399,180.87, 1,656,724,145.41 and 691,664,459.30

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Solution

The fourth proportional to 1,200,399,180.87, 1,656,724,145.41 and 691,664,459.30 is: 954,596,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,399,180.87 : 1,656,724,145.41 = 691,664,459.30 : x
  2. Step 2: Convert to fraction form
    1,200,399,180.87/1,656,724,145.41 = 691,664,459.30/x
  3. Step 3: Cross multiply
    1,200,399,180.87x = 1,656,724,145.41 × 691,664,459.30
  4. Step 4: Simplify right side
    1,200,399,180.87x = 1,145,897,210,244,262,144
  5. Step 5: Solve for x
    x = 1,145,897,210,244,262,144/1,200,399,180.87
  6. Step 6: Final answer
    x = 954,596,794.55

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Double scale
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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.