Home / 8,460,031.20-12,690,046.80-2,780,829.60

Finding the Fourth Proportional to 8,460,031.20, 12,690,046.80 and 2,780,829.60

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Solution

The fourth proportional to 8,460,031.20, 12,690,046.80 and 2,780,829.60 is: 4,171,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460,031.20 : 12,690,046.80 = 2,780,829.60 : x
  2. Step 2: Convert to fraction form
    8,460,031.20/12,690,046.80 = 2,780,829.60/x
  3. Step 3: Cross multiply
    8,460,031.20x = 12,690,046.80 × 2,780,829.60
  4. Step 4: Simplify right side
    8,460,031.20x = 35,288,857,766,825.28
  5. Step 5: Solve for x
    x = 35,288,857,766,825.28/8,460,031.20
  6. Step 6: Final answer
    x = 4,171,244.40

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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.