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Finding the Fourth Proportional to 5,890,279.80, 8,830,235.70 and 3,990,862.20

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Solution

The fourth proportional to 5,890,279.80, 8,830,235.70 and 3,990,862.20 is: 5,982,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890,279.80 : 8,830,235.70 = 3,990,862.20 : x
  2. Step 2: Convert to fraction form
    5,890,279.80/8,830,235.70 = 3,990,862.20/x
  3. Step 3: Cross multiply
    5,890,279.80x = 8,830,235.70 × 3,990,862.20
  4. Step 4: Simplify right side
    5,890,279.80x = 35,240,253,872,220.54
  5. Step 5: Solve for x
    x = 35,240,253,872,220.54/5,890,279.80
  6. Step 6: Final answer
    x = 5,982,780.97

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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.