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Finding the Fourth Proportional to 861,727.68, 1,292,008.32 and 300,456

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Solution

The fourth proportional to 861,727.68, 1,292,008.32 and 300,456 is: 450,480.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,727.68 : 1,292,008.32 = 300,456 : x
  2. Step 2: Convert to fraction form
    861,727.68/1,292,008.32 = 300,456/x
  3. Step 3: Cross multiply
    861,727.68x = 1,292,008.32 × 300,456
  4. Step 4: Simplify right side
    861,727.68x = 388,191,651,793.92
  5. Step 5: Solve for x
    x = 388,191,651,793.92/861,727.68
  6. Step 6: Final answer
    x = 450,480.66

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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.