Home / 870,815.80-1,306,223.70-658,239.40

Finding the Fourth Proportional to 870,815.80, 1,306,223.70 and 658,239.40

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Solution

The fourth proportional to 870,815.80, 1,306,223.70 and 658,239.40 is: 987,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,815.80 : 1,306,223.70 = 658,239.40 : x
  2. Step 2: Convert to fraction form
    870,815.80/1,306,223.70 = 658,239.40/x
  3. Step 3: Cross multiply
    870,815.80x = 1,306,223.70 × 658,239.40
  4. Step 4: Simplify right side
    870,815.80x = 859,807,904,553.78
  5. Step 5: Solve for x
    x = 859,807,904,553.78/870,815.80
  6. Step 6: Final answer
    x = 987,359.10

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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.