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Finding the Fourth Proportional to 615,177.33, 849,364.47 and 397,912.65

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Solution

The fourth proportional to 615,177.33, 849,364.47 and 397,912.65 is: 549,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,177.33 : 849,364.47 = 397,912.65 : x
  2. Step 2: Convert to fraction form
    615,177.33/849,364.47 = 397,912.65/x
  3. Step 3: Cross multiply
    615,177.33x = 849,364.47 × 397,912.65
  4. Step 4: Simplify right side
    615,177.33x = 337,972,867,073.55
  5. Step 5: Solve for x
    x = 337,972,867,073.55/615,177.33
  6. Step 6: Final answer
    x = 549,390.97

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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.