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Finding the Fourth Proportional to 603,432.56, 832,853.88 and 399,487.28

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Solution

The fourth proportional to 603,432.56, 832,853.88 and 399,487.28 is: 551,369.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,432.56 : 832,853.88 = 399,487.28 : x
  2. Step 2: Convert to fraction form
    603,432.56/832,853.88 = 399,487.28/x
  3. Step 3: Cross multiply
    603,432.56x = 832,853.88 × 399,487.28
  4. Step 4: Simplify right side
    603,432.56x = 332,714,531,158.65
  5. Step 5: Solve for x
    x = 332,714,531,158.65/603,432.56
  6. Step 6: Final answer
    x = 551,369.87

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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.