Home / 870,872.70-1,306,391.49-338,434.79

Finding the Fourth Proportional to 870,872.70, 1,306,391.49 and 338,434.79

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Solution

The fourth proportional to 870,872.70, 1,306,391.49 and 338,434.79 is: 507,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,872.70 : 1,306,391.49 = 338,434.79 : x
  2. Step 2: Convert to fraction form
    870,872.70/1,306,391.49 = 338,434.79/x
  3. Step 3: Cross multiply
    870,872.70x = 1,306,391.49 × 338,434.79
  4. Step 4: Simplify right side
    870,872.70x = 442,128,323,043.98
  5. Step 5: Solve for x
    x = 442,128,323,043.98/870,872.70
  6. Step 6: Final answer
    x = 507,684.21

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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.