Home / 1,152,343.20-1,590,086.90-643,067.04

Finding the Fourth Proportional to 1,152,343.20, 1,590,086.90 and 643,067.04

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Solution

The fourth proportional to 1,152,343.20, 1,590,086.90 and 643,067.04 is: 887,350.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,343.20 : 1,590,086.90 = 643,067.04 : x
  2. Step 2: Convert to fraction form
    1,152,343.20/1,590,086.90 = 643,067.04/x
  3. Step 3: Cross multiply
    1,152,343.20x = 1,590,086.90 × 643,067.04
  4. Step 4: Simplify right side
    1,152,343.20x = 1,022,532,476,125.78
  5. Step 5: Solve for x
    x = 1,022,532,476,125.78/1,152,343.20
  6. Step 6: Final answer
    x = 887,350.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.