Home / 752,514.78-1,038,470.40-450,708.78

Finding the Fourth Proportional to 752,514.78, 1,038,470.40 and 450,708.78

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Solution

The fourth proportional to 752,514.78, 1,038,470.40 and 450,708.78 is: 621,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,514.78 : 1,038,470.40 = 450,708.78 : x
  2. Step 2: Convert to fraction form
    752,514.78/1,038,470.40 = 450,708.78/x
  3. Step 3: Cross multiply
    752,514.78x = 1,038,470.40 × 450,708.78
  4. Step 4: Simplify right side
    752,514.78x = 468,047,727,050.11
  5. Step 5: Solve for x
    x = 468,047,727,050.11/752,514.78
  6. Step 6: Final answer
    x = 621,978.12

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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.