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Finding the Fourth Proportional to 615,116.28, 849,209.22 and 400,148.76

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Solution

The fourth proportional to 615,116.28, 849,209.22 and 400,148.76 is: 552,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,116.28 : 849,209.22 = 400,148.76 : x
  2. Step 2: Convert to fraction form
    615,116.28/849,209.22 = 400,148.76/x
  3. Step 3: Cross multiply
    615,116.28x = 849,209.22 × 400,148.76
  4. Step 4: Simplify right side
    615,116.28x = 339,810,016,363.57
  5. Step 5: Solve for x
    x = 339,810,016,363.57/615,116.28
  6. Step 6: Final answer
    x = 552,432.16

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1.5x scale

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.