Home / 689,228.88-951,179.40-387,442.32

Finding the Fourth Proportional to 689,228.88, 951,179.40 and 387,442.32

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Solution

The fourth proportional to 689,228.88, 951,179.40 and 387,442.32 is: 534,694.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,228.88 : 951,179.40 = 387,442.32 : x
  2. Step 2: Convert to fraction form
    689,228.88/951,179.40 = 387,442.32/x
  3. Step 3: Cross multiply
    689,228.88x = 951,179.40 × 387,442.32
  4. Step 4: Simplify right side
    689,228.88x = 368,527,153,472.21
  5. Step 5: Solve for x
    x = 368,527,153,472.21/689,228.88
  6. Step 6: Final answer
    x = 534,694.88

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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.