Home / 870,177.70-1,305,266.55-515,008.90

Finding the Fourth Proportional to 870,177.70, 1,305,266.55 and 515,008.90

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Solution

The fourth proportional to 870,177.70, 1,305,266.55 and 515,008.90 is: 772,513.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,177.70 : 1,305,266.55 = 515,008.90 : x
  2. Step 2: Convert to fraction form
    870,177.70/1,305,266.55 = 515,008.90/x
  3. Step 3: Cross multiply
    870,177.70x = 1,305,266.55 × 515,008.90
  4. Step 4: Simplify right side
    870,177.70x = 672,223,890,122.30
  5. Step 5: Solve for x
    x = 672,223,890,122.30/870,177.70
  6. Step 6: Final answer
    x = 772,513.35

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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.