Home / 2,128,123.90-3,192,185.85-1,330,306.30

Finding the Fourth Proportional to 2,128,123.90, 3,192,185.85 and 1,330,306.30

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Solution

The fourth proportional to 2,128,123.90, 3,192,185.85 and 1,330,306.30 is: 1,995,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,123.90 : 3,192,185.85 = 1,330,306.30 : x
  2. Step 2: Convert to fraction form
    2,128,123.90/3,192,185.85 = 1,330,306.30/x
  3. Step 3: Cross multiply
    2,128,123.90x = 3,192,185.85 × 1,330,306.30
  4. Step 4: Simplify right side
    2,128,123.90x = 4,246,584,947,025.86
  5. Step 5: Solve for x
    x = 4,246,584,947,025.86/2,128,123.90
  6. Step 6: Final answer
    x = 1,995,459.45

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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.