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Finding the Fourth Proportional to 982,651.60, 1,470,478.20 and 681,720.40

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Solution

The fourth proportional to 982,651.60, 1,470,478.20 and 681,720.40 is: 1,020,153.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,651.60 : 1,470,478.20 = 681,720.40 : x
  2. Step 2: Convert to fraction form
    982,651.60/1,470,478.20 = 681,720.40/x
  3. Step 3: Cross multiply
    982,651.60x = 1,470,478.20 × 681,720.40
  4. Step 4: Simplify right side
    982,651.60x = 1,002,454,986,695.28
  5. Step 5: Solve for x
    x = 1,002,454,986,695.28/982,651.60
  6. Step 6: Final answer
    x = 1,020,153.01

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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.