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Finding the Fourth Proportional to 8,891,815.20, 12,482,133.60 and 8,891,815.20

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Solution

The fourth proportional to 8,891,815.20, 12,482,133.60 and 8,891,815.20 is: 12,482,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891,815.20 : 12,482,133.60 = 8,891,815.20 : x
  2. Step 2: Convert to fraction form
    8,891,815.20/12,482,133.60 = 8,891,815.20/x
  3. Step 3: Cross multiply
    8,891,815.20x = 12,482,133.60 × 8,891,815.20
  4. Step 4: Simplify right side
    8,891,815.20x = 110,988,825,272,910.70
  5. Step 5: Solve for x
    x = 110,988,825,272,910.70/8,891,815.20
  6. Step 6: Final answer
    x = 12,482,133.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.