Home / 3,929,989.04-5,423,346.54-2,187,630.80

Finding the Fourth Proportional to 3,929,989.04, 5,423,346.54 and 2,187,630.80

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Solution

The fourth proportional to 3,929,989.04, 5,423,346.54 and 2,187,630.80 is: 3,018,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,989.04 : 5,423,346.54 = 2,187,630.80 : x
  2. Step 2: Convert to fraction form
    3,929,989.04/5,423,346.54 = 2,187,630.80/x
  3. Step 3: Cross multiply
    3,929,989.04x = 5,423,346.54 × 2,187,630.80
  4. Step 4: Simplify right side
    3,929,989.04x = 11,864,279,929,977.43
  5. Step 5: Solve for x
    x = 11,864,279,929,977.43/3,929,989.04
  6. Step 6: Final answer
    x = 3,018,909.16

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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.