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Finding the Fourth Proportional to 506,805.28, 760,428.40 and 317,699.04

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Solution

The fourth proportional to 506,805.28, 760,428.40 and 317,699.04 is: 476,686.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,805.28 : 760,428.40 = 317,699.04 : x
  2. Step 2: Convert to fraction form
    506,805.28/760,428.40 = 317,699.04/x
  3. Step 3: Cross multiply
    506,805.28x = 760,428.40 × 317,699.04
  4. Step 4: Simplify right side
    506,805.28x = 241,587,372,668.74
  5. Step 5: Solve for x
    x = 241,587,372,668.74/506,805.28
  6. Step 6: Final answer
    x = 476,686.77

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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.