Home / 7,918,213.80-11,872,509.30-3,120,373.20

Finding the Fourth Proportional to 7,918,213.80, 11,872,509.30 and 3,120,373.20

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Solution

The fourth proportional to 7,918,213.80, 11,872,509.30 and 3,120,373.20 is: 4,678,663.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918,213.80 : 11,872,509.30 = 3,120,373.20 : x
  2. Step 2: Convert to fraction form
    7,918,213.80/11,872,509.30 = 3,120,373.20/x
  3. Step 3: Cross multiply
    7,918,213.80x = 11,872,509.30 × 3,120,373.20
  4. Step 4: Simplify right side
    7,918,213.80x = 37,046,659,836,470.77
  5. Step 5: Solve for x
    x = 37,046,659,836,470.77/7,918,213.80
  6. Step 6: Final answer
    x = 4,678,663.75

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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.