Home / 8,987,789.28-12,403,222.56-5,120,248.80

Finding the Fourth Proportional to 8,987,789.28, 12,403,222.56 and 5,120,248.80

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Solution

The fourth proportional to 8,987,789.28, 12,403,222.56 and 5,120,248.80 is: 7,065,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987,789.28 : 12,403,222.56 = 5,120,248.80 : x
  2. Step 2: Convert to fraction form
    8,987,789.28/12,403,222.56 = 5,120,248.80/x
  3. Step 3: Cross multiply
    8,987,789.28x = 12,403,222.56 × 5,120,248.80
  4. Step 4: Simplify right side
    8,987,789.28x = 63,507,585,428,972.93
  5. Step 5: Solve for x
    x = 63,507,585,428,972.93/8,987,789.28
  6. Step 6: Final answer
    x = 7,065,985.13

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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.