Home / 520,610.20-781,638.04-268,071.16

Finding the Fourth Proportional to 520,610.20, 781,638.04 and 268,071.16

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Solution

The fourth proportional to 520,610.20, 781,638.04 and 268,071.16 is: 402,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,610.20 : 781,638.04 = 268,071.16 : x
  2. Step 2: Convert to fraction form
    520,610.20/781,638.04 = 268,071.16/x
  3. Step 3: Cross multiply
    520,610.20x = 781,638.04 × 268,071.16
  4. Step 4: Simplify right side
    520,610.20x = 209,534,616,082.93
  5. Step 5: Solve for x
    x = 209,534,616,082.93/520,610.20
  6. Step 6: Final answer
    x = 402,478.89

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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.