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Finding the Fourth Proportional to 615,531.30, 849,817.22 and 397,853.93

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Solution

The fourth proportional to 615,531.30, 849,817.22 and 397,853.93 is: 549,286.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,531.30 : 849,817.22 = 397,853.93 : x
  2. Step 2: Convert to fraction form
    615,531.30/849,817.22 = 397,853.93/x
  3. Step 3: Cross multiply
    615,531.30x = 849,817.22 × 397,853.93
  4. Step 4: Simplify right side
    615,531.30x = 338,103,114,520.32
  5. Step 5: Solve for x
    x = 338,103,114,520.32/615,531.30
  6. Step 6: Final answer
    x = 549,286.63

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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.