Home / 8,690,987.20-13,036,480.80-5,478,721.60

Finding the Fourth Proportional to 8,690,987.20, 13,036,480.80 and 5,478,721.60

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Solution

The fourth proportional to 8,690,987.20, 13,036,480.80 and 5,478,721.60 is: 8,218,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690,987.20 : 13,036,480.80 = 5,478,721.60 : x
  2. Step 2: Convert to fraction form
    8,690,987.20/13,036,480.80 = 5,478,721.60/x
  3. Step 3: Cross multiply
    8,690,987.20x = 13,036,480.80 × 5,478,721.60
  4. Step 4: Simplify right side
    8,690,987.20x = 71,423,248,946,945.28
  5. Step 5: Solve for x
    x = 71,423,248,946,945.28/8,690,987.20
  6. Step 6: Final answer
    x = 8,218,082.40

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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.