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Finding the Fourth Proportional to 752,765.76, 1,038,563.76 and 480,992.76

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Solution

The fourth proportional to 752,765.76, 1,038,563.76 and 480,992.76 is: 663,608.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,765.76 : 1,038,563.76 = 480,992.76 : x
  2. Step 2: Convert to fraction form
    752,765.76/1,038,563.76 = 480,992.76/x
  3. Step 3: Cross multiply
    752,765.76x = 1,038,563.76 × 480,992.76
  4. Step 4: Simplify right side
    752,765.76x = 499,541,649,358.38
  5. Step 5: Solve for x
    x = 499,541,649,358.38/752,765.76
  6. Step 6: Final answer
    x = 663,608.36

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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.