Home / 7,947,007.20-11,920,510.80-7,415,566.20

Finding the Fourth Proportional to 7,947,007.20, 11,920,510.80 and 7,415,566.20

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Solution

The fourth proportional to 7,947,007.20, 11,920,510.80 and 7,415,566.20 is: 11,123,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947,007.20 : 11,920,510.80 = 7,415,566.20 : x
  2. Step 2: Convert to fraction form
    7,947,007.20/11,920,510.80 = 7,415,566.20/x
  3. Step 3: Cross multiply
    7,947,007.20x = 11,920,510.80 × 7,415,566.20
  4. Step 4: Simplify right side
    7,947,007.20x = 88,397,336,975,214.97
  5. Step 5: Solve for x
    x = 88,397,336,975,214.97/7,947,007.20
  6. Step 6: Final answer
    x = 11,123,349.30

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Double scale
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Similar ratio
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1.5x scale

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.