Home / 870,865.20-1,306,380.24-338,427.29

Finding the Fourth Proportional to 870,865.20, 1,306,380.24 and 338,427.29

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Solution

The fourth proportional to 870,865.20, 1,306,380.24 and 338,427.29 is: 507,672.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,865.20 : 1,306,380.24 = 338,427.29 : x
  2. Step 2: Convert to fraction form
    870,865.20/1,306,380.24 = 338,427.29/x
  3. Step 3: Cross multiply
    870,865.20x = 1,306,380.24 × 338,427.29
  4. Step 4: Simplify right side
    870,865.20x = 442,114,724,332.75
  5. Step 5: Solve for x
    x = 442,114,724,332.75/870,865.20
  6. Step 6: Final answer
    x = 507,672.97

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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.