Home / 8,554,518.80-12,831,778.20-7,987,648.40

Finding the Fourth Proportional to 8,554,518.80, 12,831,778.20 and 7,987,648.40

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Solution

The fourth proportional to 8,554,518.80, 12,831,778.20 and 7,987,648.40 is: 11,981,472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,554,518.80 : 12,831,778.20 = 7,987,648.40 : x
  2. Step 2: Convert to fraction form
    8,554,518.80/12,831,778.20 = 7,987,648.40/x
  3. Step 3: Cross multiply
    8,554,518.80x = 12,831,778.20 × 7,987,648.40
  4. Step 4: Simplify right side
    8,554,518.80x = 102,495,732,608,384.88
  5. Step 5: Solve for x
    x = 102,495,732,608,384.88/8,554,518.80
  6. Step 6: Final answer
    x = 11,981,472.60

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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.