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Finding the Fourth Proportional to 615,487.98, 849,515.13 and 360,921.18

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Solution

The fourth proportional to 615,487.98, 849,515.13 and 360,921.18 is: 498,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,487.98 : 849,515.13 = 360,921.18 : x
  2. Step 2: Convert to fraction form
    615,487.98/849,515.13 = 360,921.18/x
  3. Step 3: Cross multiply
    615,487.98x = 849,515.13 × 360,921.18
  4. Step 4: Simplify right side
    615,487.98x = 306,608,003,147.45
  5. Step 5: Solve for x
    x = 306,608,003,147.45/615,487.98
  6. Step 6: Final answer
    x = 498,154.33

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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.