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Finding the Fourth Proportional to 525,091.52, 724,178.40 and 443,812.88

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Solution

The fourth proportional to 525,091.52, 724,178.40 and 443,812.88 is: 612,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,091.52 : 724,178.40 = 443,812.88 : x
  2. Step 2: Convert to fraction form
    525,091.52/724,178.40 = 443,812.88/x
  3. Step 3: Cross multiply
    525,091.52x = 724,178.40 × 443,812.88
  4. Step 4: Simplify right side
    525,091.52x = 321,399,701,337.79
  5. Step 5: Solve for x
    x = 321,399,701,337.79/525,091.52
  6. Step 6: Final answer
    x = 612,083.21

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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.