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Finding the Fourth Proportional to 859,951.80, 1,288,153.80 and 503,886.60

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Solution

The fourth proportional to 859,951.80, 1,288,153.80 and 503,886.60 is: 754,790.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,951.80 : 1,288,153.80 = 503,886.60 : x
  2. Step 2: Convert to fraction form
    859,951.80/1,288,153.80 = 503,886.60/x
  3. Step 3: Cross multiply
    859,951.80x = 1,288,153.80 × 503,886.60
  4. Step 4: Simplify right side
    859,951.80x = 649,083,438,559.08
  5. Step 5: Solve for x
    x = 649,083,438,559.08/859,951.80
  6. Step 6: Final answer
    x = 754,790.49

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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.