Home / 8,492,031.20-12,738,046.80-5,657,679.20

Finding the Fourth Proportional to 8,492,031.20, 12,738,046.80 and 5,657,679.20

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Solution

The fourth proportional to 8,492,031.20, 12,738,046.80 and 5,657,679.20 is: 8,486,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492,031.20 : 12,738,046.80 = 5,657,679.20 : x
  2. Step 2: Convert to fraction form
    8,492,031.20/12,738,046.80 = 5,657,679.20/x
  3. Step 3: Cross multiply
    8,492,031.20x = 12,738,046.80 × 5,657,679.20
  4. Step 4: Simplify right side
    8,492,031.20x = 72,067,782,428,986.56
  5. Step 5: Solve for x
    x = 72,067,782,428,986.56/8,492,031.20
  6. Step 6: Final answer
    x = 8,486,518.80

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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.