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Finding the Fourth Proportional to 804,640.20, 1,207,737.90 and 489,712.20

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Solution

The fourth proportional to 804,640.20, 1,207,737.90 and 489,712.20 is: 735,041.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,640.20 : 1,207,737.90 = 489,712.20 : x
  2. Step 2: Convert to fraction form
    804,640.20/1,207,737.90 = 489,712.20/x
  3. Step 3: Cross multiply
    804,640.20x = 1,207,737.90 × 489,712.20
  4. Step 4: Simplify right side
    804,640.20x = 591,443,984,032.38
  5. Step 5: Solve for x
    x = 591,443,984,032.38/804,640.20
  6. Step 6: Final answer
    x = 735,041.56

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1.5x scale

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.