Home / 8,142,402.80-12,213,604.20-5,272,621.40

Finding the Fourth Proportional to 8,142,402.80, 12,213,604.20 and 5,272,621.40

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Solution

The fourth proportional to 8,142,402.80, 12,213,604.20 and 5,272,621.40 is: 7,908,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142,402.80 : 12,213,604.20 = 5,272,621.40 : x
  2. Step 2: Convert to fraction form
    8,142,402.80/12,213,604.20 = 5,272,621.40/x
  3. Step 3: Cross multiply
    8,142,402.80x = 12,213,604.20 × 5,272,621.40
  4. Step 4: Simplify right side
    8,142,402.80x = 64,397,710,876,049.88
  5. Step 5: Solve for x
    x = 64,397,710,876,049.88/8,142,402.80
  6. Step 6: Final answer
    x = 7,908,932.10

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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.