Home / 1,386,350.78-2,079,509.70-439,729.70

Finding the Fourth Proportional to 1,386,350.78, 2,079,509.70 and 439,729.70

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Solution

The fourth proportional to 1,386,350.78, 2,079,509.70 and 439,729.70 is: 659,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,350.78 : 2,079,509.70 = 439,729.70 : x
  2. Step 2: Convert to fraction form
    1,386,350.78/2,079,509.70 = 439,729.70/x
  3. Step 3: Cross multiply
    1,386,350.78x = 2,079,509.70 × 439,729.70
  4. Step 4: Simplify right side
    1,386,350.78x = 914,422,176,528.09
  5. Step 5: Solve for x
    x = 914,422,176,528.09/1,386,350.78
  6. Step 6: Final answer
    x = 659,589.33

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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.