Home / 1,039,139.28-1,557,498.78-439,901.28

Finding the Fourth Proportional to 1,039,139.28, 1,557,498.78 and 439,901.28

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Solution

The fourth proportional to 1,039,139.28, 1,557,498.78 and 439,901.28 is: 659,339.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,139.28 : 1,557,498.78 = 439,901.28 : x
  2. Step 2: Convert to fraction form
    1,039,139.28/1,557,498.78 = 439,901.28/x
  3. Step 3: Cross multiply
    1,039,139.28x = 1,557,498.78 × 439,901.28
  4. Step 4: Simplify right side
    1,039,139.28x = 685,145,706,920.44
  5. Step 5: Solve for x
    x = 685,145,706,920.44/1,039,139.28
  6. Step 6: Final answer
    x = 659,339.63

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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.