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Finding the Fourth Proportional to 615,513.93, 849,793.24 and 397,836.55

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Solution

The fourth proportional to 615,513.93, 849,793.24 and 397,836.55 is: 549,262.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,513.93 : 849,793.24 = 397,836.55 : x
  2. Step 2: Convert to fraction form
    615,513.93/849,793.24 = 397,836.55/x
  3. Step 3: Cross multiply
    615,513.93x = 849,793.24 × 397,836.55
  4. Step 4: Simplify right side
    615,513.93x = 338,078,810,814.92
  5. Step 5: Solve for x
    x = 338,078,810,814.92/615,513.93
  6. Step 6: Final answer
    x = 549,262.65

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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.