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Finding the Fourth Proportional to 635,655.06, 876,953.17 and 409,431.86

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Solution

The fourth proportional to 635,655.06, 876,953.17 and 409,431.86 is: 564,854.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,655.06 : 876,953.17 = 409,431.86 : x
  2. Step 2: Convert to fraction form
    635,655.06/876,953.17 = 409,431.86/x
  3. Step 3: Cross multiply
    635,655.06x = 876,953.17 × 409,431.86
  4. Step 4: Simplify right side
    635,655.06x = 359,052,567,526.00
  5. Step 5: Solve for x
    x = 359,052,567,526.00/635,655.06
  6. Step 6: Final answer
    x = 564,854.42

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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.