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Finding the Fourth Proportional to 615,693.73, 849,648.39 and 343,765.40

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Solution

The fourth proportional to 615,693.73, 849,648.39 and 343,765.40 is: 474,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,693.73 : 849,648.39 = 343,765.40 : x
  2. Step 2: Convert to fraction form
    615,693.73/849,648.39 = 343,765.40/x
  3. Step 3: Cross multiply
    615,693.73x = 849,648.39 × 343,765.40
  4. Step 4: Simplify right side
    615,693.73x = 292,079,715,688.58
  5. Step 5: Solve for x
    x = 292,079,715,688.58/615,693.73
  6. Step 6: Final answer
    x = 474,391.25

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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.