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Finding the Fourth Proportional to 432,871.20, 649,306.80 and 432,871.20

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Solution

The fourth proportional to 432,871.20, 649,306.80 and 432,871.20 is: 649,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,871.20 : 649,306.80 = 432,871.20 : x
  2. Step 2: Convert to fraction form
    432,871.20/649,306.80 = 432,871.20/x
  3. Step 3: Cross multiply
    432,871.20x = 649,306.80 × 432,871.20
  4. Step 4: Simplify right side
    432,871.20x = 281,066,213,684.16
  5. Step 5: Solve for x
    x = 281,066,213,684.16/432,871.20
  6. Step 6: Final answer
    x = 649,306.80

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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.