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Finding the Fourth Proportional to 635,617.83, 953,426.75 and 399,126.59

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Solution

The fourth proportional to 635,617.83, 953,426.75 and 399,126.59 is: 598,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,617.83 : 953,426.75 = 399,126.59 : x
  2. Step 2: Convert to fraction form
    635,617.83/953,426.75 = 399,126.59/x
  3. Step 3: Cross multiply
    635,617.83x = 953,426.75 × 399,126.59
  4. Step 4: Simplify right side
    635,617.83x = 380,537,966,599.95
  5. Step 5: Solve for x
    x = 380,537,966,599.95/635,617.83
  6. Step 6: Final answer
    x = 598,689.88

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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.