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Finding the Fourth Proportional to 496,387.20, 744,580.80 and 417,655.20

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Solution

The fourth proportional to 496,387.20, 744,580.80 and 417,655.20 is: 626,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,387.20 : 744,580.80 = 417,655.20 : x
  2. Step 2: Convert to fraction form
    496,387.20/744,580.80 = 417,655.20/x
  3. Step 3: Cross multiply
    496,387.20x = 744,580.80 × 417,655.20
  4. Step 4: Simplify right side
    496,387.20x = 310,978,042,940.16
  5. Step 5: Solve for x
    x = 310,978,042,940.16/496,387.20
  6. Step 6: Final answer
    x = 626,482.80

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Similar ratio
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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.