Home / 764,856.78-1,147,121.14-315,461.08

Finding the Fourth Proportional to 764,856.78, 1,147,121.14 and 315,461.08

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Solution

The fourth proportional to 764,856.78, 1,147,121.14 and 315,461.08 is: 473,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,856.78 : 1,147,121.14 = 315,461.08 : x
  2. Step 2: Convert to fraction form
    764,856.78/1,147,121.14 = 315,461.08/x
  3. Step 3: Cross multiply
    764,856.78x = 1,147,121.14 × 315,461.08
  4. Step 4: Simplify right side
    764,856.78x = 361,872,074,951.97
  5. Step 5: Solve for x
    x = 361,872,074,951.97/764,856.78
  6. Step 6: Final answer
    x = 473,123.97

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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.