Home / 3,969,970.40-5,478,401.04-2,159,135.84

Finding the Fourth Proportional to 3,969,970.40, 5,478,401.04 and 2,159,135.84

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Solution

The fourth proportional to 3,969,970.40, 5,478,401.04 and 2,159,135.84 is: 2,979,521.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,970.40 : 5,478,401.04 = 2,159,135.84 : x
  2. Step 2: Convert to fraction form
    3,969,970.40/5,478,401.04 = 2,159,135.84/x
  3. Step 3: Cross multiply
    3,969,970.40x = 5,478,401.04 × 2,159,135.84
  4. Step 4: Simplify right side
    3,969,970.40x = 11,828,612,031,357.27
  5. Step 5: Solve for x
    x = 11,828,612,031,357.27/3,969,970.40
  6. Step 6: Final answer
    x = 2,979,521.47

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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.