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Finding the Fourth Proportional to 615,629.20, 923,443.80 and 349,908.70

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Solution

The fourth proportional to 615,629.20, 923,443.80 and 349,908.70 is: 524,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,629.20 : 923,443.80 = 349,908.70 : x
  2. Step 2: Convert to fraction form
    615,629.20/923,443.80 = 349,908.70/x
  3. Step 3: Cross multiply
    615,629.20x = 923,443.80 × 349,908.70
  4. Step 4: Simplify right side
    615,629.20x = 323,121,019,581.06
  5. Step 5: Solve for x
    x = 323,121,019,581.06/615,629.20
  6. Step 6: Final answer
    x = 524,863.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.