Home / 3,969,962.40-5,478,390-2,159,127.84

Finding the Fourth Proportional to 3,969,962.40, 5,478,390 and 2,159,127.84

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Solution

The fourth proportional to 3,969,962.40, 5,478,390 and 2,159,127.84 is: 2,979,510.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,962.40 : 5,478,390 = 2,159,127.84 : x
  2. Step 2: Convert to fraction form
    3,969,962.40/5,478,390 = 2,159,127.84/x
  3. Step 3: Cross multiply
    3,969,962.40x = 5,478,390 × 2,159,127.84
  4. Step 4: Simplify right side
    3,969,962.40x = 11,828,544,367,377.60
  5. Step 5: Solve for x
    x = 11,828,544,367,377.60/3,969,962.40
  6. Step 6: Final answer
    x = 2,979,510.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.