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Finding the Fourth Proportional to 520,694.82, 781,764.84 and 268,155.54

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Solution

The fourth proportional to 520,694.82, 781,764.84 and 268,155.54 is: 402,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,694.82 : 781,764.84 = 268,155.54 : x
  2. Step 2: Convert to fraction form
    520,694.82/781,764.84 = 268,155.54/x
  3. Step 3: Cross multiply
    520,694.82x = 781,764.84 × 268,155.54
  4. Step 4: Simplify right side
    520,694.82x = 209,634,572,823.21
  5. Step 5: Solve for x
    x = 209,634,572,823.21/520,694.82
  6. Step 6: Final answer
    x = 402,605.45

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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.