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Finding the Fourth Proportional to 572,005.94, 789,737.97 and 354,445.47

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Solution

The fourth proportional to 572,005.94, 789,737.97 and 354,445.47 is: 489,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,005.94 : 789,737.97 = 354,445.47 : x
  2. Step 2: Convert to fraction form
    572,005.94/789,737.97 = 354,445.47/x
  3. Step 3: Cross multiply
    572,005.94x = 789,737.97 × 354,445.47
  4. Step 4: Simplify right side
    572,005.94x = 279,919,045,953.50
  5. Step 5: Solve for x
    x = 279,919,045,953.50/572,005.94
  6. Step 6: Final answer
    x = 489,363.88

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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.