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Finding the Fourth Proportional to 615,853.92, 849,643.44 and 374,045.28

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Solution

The fourth proportional to 615,853.92, 849,643.44 and 374,045.28 is: 516,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,853.92 : 849,643.44 = 374,045.28 : x
  2. Step 2: Convert to fraction form
    615,853.92/849,643.44 = 374,045.28/x
  3. Step 3: Cross multiply
    615,853.92x = 849,643.44 × 374,045.28
  4. Step 4: Simplify right side
    615,853.92x = 317,805,118,414.96
  5. Step 5: Solve for x
    x = 317,805,118,414.96/615,853.92
  6. Step 6: Final answer
    x = 516,039.78

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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.