Home / 1,330,396.40-1,995,886.20-431,685.20

Finding the Fourth Proportional to 1,330,396.40, 1,995,886.20 and 431,685.20

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Solution

The fourth proportional to 1,330,396.40, 1,995,886.20 and 431,685.20 is: 647,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,396.40 : 1,995,886.20 = 431,685.20 : x
  2. Step 2: Convert to fraction form
    1,330,396.40/1,995,886.20 = 431,685.20/x
  3. Step 3: Cross multiply
    1,330,396.40x = 1,995,886.20 × 431,685.20
  4. Step 4: Simplify right side
    1,330,396.40x = 861,594,533,424.24
  5. Step 5: Solve for x
    x = 861,594,533,424.24/1,330,396.40
  6. Step 6: Final answer
    x = 647,622.42

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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.