Home / 7,131,631.20-10,697,446.80-2,642,978.40

Finding the Fourth Proportional to 7,131,631.20, 10,697,446.80 and 2,642,978.40

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Solution

The fourth proportional to 7,131,631.20, 10,697,446.80 and 2,642,978.40 is: 3,964,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131,631.20 : 10,697,446.80 = 2,642,978.40 : x
  2. Step 2: Convert to fraction form
    7,131,631.20/10,697,446.80 = 2,642,978.40/x
  3. Step 3: Cross multiply
    7,131,631.20x = 10,697,446.80 × 2,642,978.40
  4. Step 4: Simplify right side
    7,131,631.20x = 28,273,120,827,549.12
  5. Step 5: Solve for x
    x = 28,273,120,827,549.12/7,131,631.20
  6. Step 6: Final answer
    x = 3,964,467.60

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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.