Home / 870,864.82-1,306,379.68-338,426.91

Finding the Fourth Proportional to 870,864.82, 1,306,379.68 and 338,426.91

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Solution

The fourth proportional to 870,864.82, 1,306,379.68 and 338,426.91 is: 507,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,864.82 : 1,306,379.68 = 338,426.91 : x
  2. Step 2: Convert to fraction form
    870,864.82/1,306,379.68 = 338,426.91/x
  3. Step 3: Cross multiply
    870,864.82x = 1,306,379.68 × 338,426.91
  4. Step 4: Simplify right side
    870,864.82x = 442,114,037,543.12
  5. Step 5: Solve for x
    x = 442,114,037,543.12/870,864.82
  6. Step 6: Final answer
    x = 507,672.41

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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.