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Finding the Fourth Proportional to 615,304.55, 849,494.51 and 422,029.79

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Solution

The fourth proportional to 615,304.55, 849,494.51 and 422,029.79 is: 582,657.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,304.55 : 849,494.51 = 422,029.79 : x
  2. Step 2: Convert to fraction form
    615,304.55/849,494.51 = 422,029.79/x
  3. Step 3: Cross multiply
    615,304.55x = 849,494.51 × 422,029.79
  4. Step 4: Simplify right side
    615,304.55x = 358,511,989,675.04
  5. Step 5: Solve for x
    x = 358,511,989,675.04/615,304.55
  6. Step 6: Final answer
    x = 582,657.79

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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.