Home / 870,963.68-1,306,108.55-338,414.60

Finding the Fourth Proportional to 870,963.68, 1,306,108.55 and 338,414.60

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Solution

The fourth proportional to 870,963.68, 1,306,108.55 and 338,414.60 is: 507,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,963.68 : 1,306,108.55 = 338,414.60 : x
  2. Step 2: Convert to fraction form
    870,963.68/1,306,108.55 = 338,414.60/x
  3. Step 3: Cross multiply
    870,963.68x = 1,306,108.55 × 338,414.60
  4. Step 4: Simplify right side
    870,963.68x = 442,006,194,282.21
  5. Step 5: Solve for x
    x = 442,006,194,282.21/870,963.68
  6. Step 6: Final answer
    x = 507,490.96

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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.