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Finding the Fourth Proportional to 724,160, 999,340.80 and 441,536

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Solution

The fourth proportional to 724,160, 999,340.80 and 441,536 is: 609,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,160 : 999,340.80 = 441,536 : x
  2. Step 2: Convert to fraction form
    724,160/999,340.80 = 441,536/x
  3. Step 3: Cross multiply
    724,160x = 999,340.80 × 441,536
  4. Step 4: Simplify right side
    724,160x = 441,244,939,468.80
  5. Step 5: Solve for x
    x = 441,244,939,468.80/724,160
  6. Step 6: Final answer
    x = 609,319.68

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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.