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Finding the Fourth Proportional to 520,654.29, 718,290.95 and 339,300.15

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Solution

The fourth proportional to 520,654.29, 718,290.95 and 339,300.15 is: 468,096.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,654.29 : 718,290.95 = 339,300.15 : x
  2. Step 2: Convert to fraction form
    520,654.29/718,290.95 = 339,300.15/x
  3. Step 3: Cross multiply
    520,654.29x = 718,290.95 × 339,300.15
  4. Step 4: Simplify right side
    520,654.29x = 243,716,225,382.14
  5. Step 5: Solve for x
    x = 243,716,225,382.14/520,654.29
  6. Step 6: Final answer
    x = 468,096.07

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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.