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Finding the Fourth Proportional to 635,441.61, 876,690.20 and 406,133.12

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Solution

The fourth proportional to 635,441.61, 876,690.20 and 406,133.12 is: 560,323.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,441.61 : 876,690.20 = 406,133.12 : x
  2. Step 2: Convert to fraction form
    635,441.61/876,690.20 = 406,133.12/x
  3. Step 3: Cross multiply
    635,441.61x = 876,690.20 × 406,133.12
  4. Step 4: Simplify right side
    635,441.61x = 356,052,929,406.48
  5. Step 5: Solve for x
    x = 356,052,929,406.48/635,441.61
  6. Step 6: Final answer
    x = 560,323.60

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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.