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Finding the Fourth Proportional to 591,990.80, 887,257.20 and 402,450.80

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Solution

The fourth proportional to 591,990.80, 887,257.20 and 402,450.80 is: 603,180.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,990.80 : 887,257.20 = 402,450.80 : x
  2. Step 2: Convert to fraction form
    591,990.80/887,257.20 = 402,450.80/x
  3. Step 3: Cross multiply
    591,990.80x = 887,257.20 × 402,450.80
  4. Step 4: Simplify right side
    591,990.80x = 357,077,369,945.76
  5. Step 5: Solve for x
    x = 357,077,369,945.76/591,990.80
  6. Step 6: Final answer
    x = 603,180.61

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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.