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Finding the Fourth Proportional to 644,734.74, 889,753.98 and 354,341.04

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Solution

The fourth proportional to 644,734.74, 889,753.98 and 354,341.04 is: 489,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,734.74 : 889,753.98 = 354,341.04 : x
  2. Step 2: Convert to fraction form
    644,734.74/889,753.98 = 354,341.04/x
  3. Step 3: Cross multiply
    644,734.74x = 889,753.98 × 354,341.04
  4. Step 4: Simplify right side
    644,734.74x = 315,276,350,617.34
  5. Step 5: Solve for x
    x = 315,276,350,617.34/644,734.74
  6. Step 6: Final answer
    x = 489,001.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.