Home / 861,459.20-1,292,279.52-300,498.56

Finding the Fourth Proportional to 861,459.20, 1,292,279.52 and 300,498.56

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Solution

The fourth proportional to 861,459.20, 1,292,279.52 and 300,498.56 is: 450,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,459.20 : 1,292,279.52 = 300,498.56 : x
  2. Step 2: Convert to fraction form
    861,459.20/1,292,279.52 = 300,498.56/x
  3. Step 3: Cross multiply
    861,459.20x = 1,292,279.52 × 300,498.56
  4. Step 4: Simplify right side
    861,459.20x = 388,328,134,877.49
  5. Step 5: Solve for x
    x = 388,328,134,877.49/861,459.20
  6. Step 6: Final answer
    x = 450,779.49

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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.