Home / 861,548.86-1,292,323.65-387,680.68

Finding the Fourth Proportional to 861,548.86, 1,292,323.65 and 387,680.68

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Solution

The fourth proportional to 861,548.86, 1,292,323.65 and 387,680.68 is: 581,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,548.86 : 1,292,323.65 = 387,680.68 : x
  2. Step 2: Convert to fraction form
    861,548.86/1,292,323.65 = 387,680.68/x
  3. Step 3: Cross multiply
    861,548.86x = 1,292,323.65 × 387,680.68
  4. Step 4: Simplify right side
    861,548.86x = 501,008,911,412.08
  5. Step 5: Solve for x
    x = 501,008,911,412.08/861,548.86
  6. Step 6: Final answer
    x = 581,521.18

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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.