Home / 3,128,005.80-4,692,008.70-1,330,947.90

Finding the Fourth Proportional to 3,128,005.80, 4,692,008.70 and 1,330,947.90

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Solution

The fourth proportional to 3,128,005.80, 4,692,008.70 and 1,330,947.90 is: 1,996,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,005.80 : 4,692,008.70 = 1,330,947.90 : x
  2. Step 2: Convert to fraction form
    3,128,005.80/4,692,008.70 = 1,330,947.90/x
  3. Step 3: Cross multiply
    3,128,005.80x = 4,692,008.70 × 1,330,947.90
  4. Step 4: Simplify right side
    3,128,005.80x = 6,244,819,126,046.73
  5. Step 5: Solve for x
    x = 6,244,819,126,046.73/3,128,005.80
  6. Step 6: Final answer
    x = 1,996,421.85

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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.