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Finding the Fourth Proportional to 520,655.30, 718,292.33 and 339,301.16

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Solution

The fourth proportional to 520,655.30, 718,292.33 and 339,301.16 is: 468,097.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,655.30 : 718,292.33 = 339,301.16 : x
  2. Step 2: Convert to fraction form
    520,655.30/718,292.33 = 339,301.16/x
  3. Step 3: Cross multiply
    520,655.30x = 718,292.33 × 339,301.16
  4. Step 4: Simplify right side
    520,655.30x = 243,717,415,500.14
  5. Step 5: Solve for x
    x = 243,717,415,500.14/520,655.30
  6. Step 6: Final answer
    x = 468,097.45

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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.