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Finding the Fourth Proportional to 664,281,428.70, 996,422,143.05 and 664,281,428.70

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Solution

The fourth proportional to 664,281,428.70, 996,422,143.05 and 664,281,428.70 is: 996,422,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,281,428.70 : 996,422,143.05 = 664,281,428.70 : x
  2. Step 2: Convert to fraction form
    664,281,428.70/996,422,143.05 = 664,281,428.70/x
  3. Step 3: Cross multiply
    664,281,428.70x = 996,422,143.05 × 664,281,428.70
  4. Step 4: Simplify right side
    664,281,428.70x = 661,904,724,773,569,792
  5. Step 5: Solve for x
    x = 661,904,724,773,569,792/664,281,428.70
  6. Step 6: Final answer
    x = 996,422,143.05

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Double scale
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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.