Home / 918,007.20-1,377,010.80-858,520.80

Finding the Fourth Proportional to 918,007.20, 1,377,010.80 and 858,520.80

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Solution

The fourth proportional to 918,007.20, 1,377,010.80 and 858,520.80 is: 1,287,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,007.20 : 1,377,010.80 = 858,520.80 : x
  2. Step 2: Convert to fraction form
    918,007.20/1,377,010.80 = 858,520.80/x
  3. Step 3: Cross multiply
    918,007.20x = 1,377,010.80 × 858,520.80
  4. Step 4: Simplify right side
    918,007.20x = 1,182,192,413,624.64
  5. Step 5: Solve for x
    x = 1,182,192,413,624.64/918,007.20
  6. Step 6: Final answer
    x = 1,287,781.20

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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.