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Finding the Fourth Proportional to 412,598.48, 618,107.14 and 279,248.72

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Solution

The fourth proportional to 412,598.48, 618,107.14 and 279,248.72 is: 418,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,598.48 : 618,107.14 = 279,248.72 : x
  2. Step 2: Convert to fraction form
    412,598.48/618,107.14 = 279,248.72/x
  3. Step 3: Cross multiply
    412,598.48x = 618,107.14 × 279,248.72
  4. Step 4: Simplify right side
    412,598.48x = 172,605,627,667.86
  5. Step 5: Solve for x
    x = 172,605,627,667.86/412,598.48
  6. Step 6: Final answer
    x = 418,338.01

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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.