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Finding the Fourth Proportional to 554,861.38, 765,711.32 and 313,154.14

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Solution

The fourth proportional to 554,861.38, 765,711.32 and 313,154.14 is: 432,154.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,861.38 : 765,711.32 = 313,154.14 : x
  2. Step 2: Convert to fraction form
    554,861.38/765,711.32 = 313,154.14/x
  3. Step 3: Cross multiply
    554,861.38x = 765,711.32 × 313,154.14
  4. Step 4: Simplify right side
    554,861.38x = 239,785,669,902.87
  5. Step 5: Solve for x
    x = 239,785,669,902.87/554,861.38
  6. Step 6: Final answer
    x = 432,154.19

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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.