Home / 1,330,355.40-1,995,824.70-431,644.20

Finding the Fourth Proportional to 1,330,355.40, 1,995,824.70 and 431,644.20

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Solution

The fourth proportional to 1,330,355.40, 1,995,824.70 and 431,644.20 is: 647,560.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,355.40 : 1,995,824.70 = 431,644.20 : x
  2. Step 2: Convert to fraction form
    1,330,355.40/1,995,824.70 = 431,644.20/x
  3. Step 3: Cross multiply
    1,330,355.40x = 1,995,824.70 × 431,644.20
  4. Step 4: Simplify right side
    1,330,355.40x = 861,486,155,971.74
  5. Step 5: Solve for x
    x = 861,486,155,971.74/1,330,355.40
  6. Step 6: Final answer
    x = 647,560.91

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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.