Home / 689,387.75-951,355.05-387,581.75

Finding the Fourth Proportional to 689,387.75, 951,355.05 and 387,581.75

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Solution

The fourth proportional to 689,387.75, 951,355.05 and 387,581.75 is: 534,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,387.75 : 951,355.05 = 387,581.75 : x
  2. Step 2: Convert to fraction form
    689,387.75/951,355.05 = 387,581.75/x
  3. Step 3: Cross multiply
    689,387.75x = 951,355.05 × 387,581.75
  4. Step 4: Simplify right side
    689,387.75x = 368,727,855,150.34
  5. Step 5: Solve for x
    x = 368,727,855,150.34/689,387.75
  6. Step 6: Final answer
    x = 534,862.79

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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.