Home / 840,739.76-1,261,074.32-391,306.04

Finding the Fourth Proportional to 840,739.76, 1,261,074.32 and 391,306.04

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Solution

The fourth proportional to 840,739.76, 1,261,074.32 and 391,306.04 is: 586,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,739.76 : 1,261,074.32 = 391,306.04 : x
  2. Step 2: Convert to fraction form
    840,739.76/1,261,074.32 = 391,306.04/x
  3. Step 3: Cross multiply
    840,739.76x = 1,261,074.32 × 391,306.04
  4. Step 4: Simplify right side
    840,739.76x = 493,465,998,304.89
  5. Step 5: Solve for x
    x = 493,465,998,304.89/840,739.76
  6. Step 6: Final answer
    x = 586,942.62

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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.