Home / 689,727.76-951,955.32-431,724.40

Finding the Fourth Proportional to 689,727.76, 951,955.32 and 431,724.40

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Solution

The fourth proportional to 689,727.76, 951,955.32 and 431,724.40 is: 595,861.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,727.76 : 951,955.32 = 431,724.40 : x
  2. Step 2: Convert to fraction form
    689,727.76/951,955.32 = 431,724.40/x
  3. Step 3: Cross multiply
    689,727.76x = 951,955.32 × 431,724.40
  4. Step 4: Simplify right side
    689,727.76x = 410,982,339,353.81
  5. Step 5: Solve for x
    x = 410,982,339,353.81/689,727.76
  6. Step 6: Final answer
    x = 595,861.68

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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.