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Finding the Fourth Proportional to 615,855.92, 849,646.20 and 374,047.28

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Solution

The fourth proportional to 615,855.92, 849,646.20 and 374,047.28 is: 516,042.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,855.92 : 849,646.20 = 374,047.28 : x
  2. Step 2: Convert to fraction form
    615,855.92/849,646.20 = 374,047.28/x
  3. Step 3: Cross multiply
    615,855.92x = 849,646.20 × 374,047.28
  4. Step 4: Simplify right side
    615,855.92x = 317,807,850,072.34
  5. Step 5: Solve for x
    x = 317,807,850,072.34/615,855.92
  6. Step 6: Final answer
    x = 516,042.53

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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.