Home / 861,430.76-1,292,410.86-441,001.88

Finding the Fourth Proportional to 861,430.76, 1,292,410.86 and 441,001.88

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Solution

The fourth proportional to 861,430.76, 1,292,410.86 and 441,001.88 is: 661,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,430.76 : 1,292,410.86 = 441,001.88 : x
  2. Step 2: Convert to fraction form
    861,430.76/1,292,410.86 = 441,001.88/x
  3. Step 3: Cross multiply
    861,430.76x = 1,292,410.86 × 441,001.88
  4. Step 4: Simplify right side
    861,430.76x = 569,955,618,992.42
  5. Step 5: Solve for x
    x = 569,955,618,992.42/861,430.76
  6. Step 6: Final answer
    x = 661,638.34

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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.