Home / 861,000.26-1,291,512.80-300,034.76

Finding the Fourth Proportional to 861,000.26, 1,291,512.80 and 300,034.76

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Solution

The fourth proportional to 861,000.26, 1,291,512.80 and 300,034.76 is: 450,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,000.26 : 1,291,512.80 = 300,034.76 : x
  2. Step 2: Convert to fraction form
    861,000.26/1,291,512.80 = 300,034.76/x
  3. Step 3: Cross multiply
    861,000.26x = 1,291,512.80 × 300,034.76
  4. Step 4: Simplify right side
    861,000.26x = 387,498,730,909.83
  5. Step 5: Solve for x
    x = 387,498,730,909.83/861,000.26
  6. Step 6: Final answer
    x = 450,056.46

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1.5x scale

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.