Home / 752,780.20-1,038,837.68-408,615.90

Finding the Fourth Proportional to 752,780.20, 1,038,837.68 and 408,615.90

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Solution

The fourth proportional to 752,780.20, 1,038,837.68 and 408,615.90 is: 563,890.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,780.20 : 1,038,837.68 = 408,615.90 : x
  2. Step 2: Convert to fraction form
    752,780.20/1,038,837.68 = 408,615.90/x
  3. Step 3: Cross multiply
    752,780.20x = 1,038,837.68 × 408,615.90
  4. Step 4: Simplify right side
    752,780.20x = 424,485,593,567.11
  5. Step 5: Solve for x
    x = 424,485,593,567.11/752,780.20
  6. Step 6: Final answer
    x = 563,890.49

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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.