Home / 815,555.30-1,221,000.15-500,627.30

Finding the Fourth Proportional to 815,555.30, 1,221,000.15 and 500,627.30

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Solution

The fourth proportional to 815,555.30, 1,221,000.15 and 500,627.30 is: 749,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,555.30 : 1,221,000.15 = 500,627.30 : x
  2. Step 2: Convert to fraction form
    815,555.30/1,221,000.15 = 500,627.30/x
  3. Step 3: Cross multiply
    815,555.30x = 1,221,000.15 × 500,627.30
  4. Step 4: Simplify right side
    815,555.30x = 611,266,008,394.10
  5. Step 5: Solve for x
    x = 611,266,008,394.10/815,555.30
  6. Step 6: Final answer
    x = 749,508.96

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Double scale
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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.