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Finding the Fourth Proportional to 802,640.22, 1,203,000.78 and 611,616.71

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Solution

The fourth proportional to 802,640.22, 1,203,000.78 and 611,616.71 is: 916,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,640.22 : 1,203,000.78 = 611,616.71 : x
  2. Step 2: Convert to fraction form
    802,640.22/1,203,000.78 = 611,616.71/x
  3. Step 3: Cross multiply
    802,640.22x = 1,203,000.78 × 611,616.71
  4. Step 4: Simplify right side
    802,640.22x = 735,775,373,176.03
  5. Step 5: Solve for x
    x = 735,775,373,176.03/802,640.22
  6. Step 6: Final answer
    x = 916,693.87

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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.