Home / 921,945.28-1,272,191.52-514,008.72

Finding the Fourth Proportional to 921,945.28, 1,272,191.52 and 514,008.72

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Solution

The fourth proportional to 921,945.28, 1,272,191.52 and 514,008.72 is: 709,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,945.28 : 1,272,191.52 = 514,008.72 : x
  2. Step 2: Convert to fraction form
    921,945.28/1,272,191.52 = 514,008.72/x
  3. Step 3: Cross multiply
    921,945.28x = 1,272,191.52 × 514,008.72
  4. Step 4: Simplify right side
    921,945.28x = 653,917,534,790.05
  5. Step 5: Solve for x
    x = 653,917,534,790.05/921,945.28
  6. Step 6: Final answer
    x = 709,280.20

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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.