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Finding the Fourth Proportional to 611,862.20, 917,478.14 and 274,613.73

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Solution

The fourth proportional to 611,862.20, 917,478.14 and 274,613.73 is: 411,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,862.20 : 917,478.14 = 274,613.73 : x
  2. Step 2: Convert to fraction form
    611,862.20/917,478.14 = 274,613.73/x
  3. Step 3: Cross multiply
    611,862.20x = 917,478.14 × 274,613.73
  4. Step 4: Simplify right side
    611,862.20x = 251,952,094,218.86
  5. Step 5: Solve for x
    x = 251,952,094,218.86/611,862.20
  6. Step 6: Final answer
    x = 411,779.15

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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.