Home / 1,333,939.20-2,001,200.40-435,422.40

Finding the Fourth Proportional to 1,333,939.20, 2,001,200.40 and 435,422.40

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Solution

The fourth proportional to 1,333,939.20, 2,001,200.40 and 435,422.40 is: 653,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,939.20 : 2,001,200.40 = 435,422.40 : x
  2. Step 2: Convert to fraction form
    1,333,939.20/2,001,200.40 = 435,422.40/x
  3. Step 3: Cross multiply
    1,333,939.20x = 2,001,200.40 × 435,422.40
  4. Step 4: Simplify right side
    1,333,939.20x = 871,367,481,048.96
  5. Step 5: Solve for x
    x = 871,367,481,048.96/1,333,939.20
  6. Step 6: Final answer
    x = 653,228.78

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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.