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Finding the Fourth Proportional to 689,184, 951,134.72 and 387,380.48

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Solution

The fourth proportional to 689,184, 951,134.72 and 387,380.48 is: 534,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,184 : 951,134.72 = 387,380.48 : x
  2. Step 2: Convert to fraction form
    689,184/951,134.72 = 387,380.48/x
  3. Step 3: Cross multiply
    689,184x = 951,134.72 × 387,380.48
  4. Step 4: Simplify right side
    689,184x = 368,451,024,378.27
  5. Step 5: Solve for x
    x = 368,451,024,378.27/689,184
  6. Step 6: Final answer
    x = 534,619.24

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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.