Home / 8,512,276.80-12,768,415.20-5,321,006.40

Finding the Fourth Proportional to 8,512,276.80, 12,768,415.20 and 5,321,006.40

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Solution

The fourth proportional to 8,512,276.80, 12,768,415.20 and 5,321,006.40 is: 7,981,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512,276.80 : 12,768,415.20 = 5,321,006.40 : x
  2. Step 2: Convert to fraction form
    8,512,276.80/12,768,415.20 = 5,321,006.40/x
  3. Step 3: Cross multiply
    8,512,276.80x = 12,768,415.20 × 5,321,006.40
  4. Step 4: Simplify right side
    8,512,276.80x = 67,940,818,997,057.28
  5. Step 5: Solve for x
    x = 67,940,818,997,057.28/8,512,276.80
  6. Step 6: Final answer
    x = 7,981,509.60

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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.