Home / 1,390,839.26-2,086,558.56-431,275.55

Finding the Fourth Proportional to 1,390,839.26, 2,086,558.56 and 431,275.55

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Solution

The fourth proportional to 1,390,839.26, 2,086,558.56 and 431,275.55 is: 647,006.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,839.26 : 2,086,558.56 = 431,275.55 : x
  2. Step 2: Convert to fraction form
    1,390,839.26/2,086,558.56 = 431,275.55/x
  3. Step 3: Cross multiply
    1,390,839.26x = 2,086,558.56 × 431,275.55
  4. Step 4: Simplify right side
    1,390,839.26x = 899,881,680,138.42
  5. Step 5: Solve for x
    x = 899,881,680,138.42/1,390,839.26
  6. Step 6: Final answer
    x = 647,006.24

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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.