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Finding the Fourth Proportional to 661,577.85, 992,694.96 and 262,209.78

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Solution

The fourth proportional to 661,577.85, 992,694.96 and 262,209.78 is: 393,444.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,577.85 : 992,694.96 = 262,209.78 : x
  2. Step 2: Convert to fraction form
    661,577.85/992,694.96 = 262,209.78/x
  3. Step 3: Cross multiply
    661,577.85x = 992,694.96 × 262,209.78
  4. Step 4: Simplify right side
    661,577.85x = 260,294,327,068.71
  5. Step 5: Solve for x
    x = 260,294,327,068.71/661,577.85
  6. Step 6: Final answer
    x = 393,444.74

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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.