Home / 1,386,359.78-2,079,523.20-439,738.70

Finding the Fourth Proportional to 1,386,359.78, 2,079,523.20 and 439,738.70

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Solution

The fourth proportional to 1,386,359.78, 2,079,523.20 and 439,738.70 is: 659,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,359.78 : 2,079,523.20 = 439,738.70 : x
  2. Step 2: Convert to fraction form
    1,386,359.78/2,079,523.20 = 439,738.70/x
  3. Step 3: Cross multiply
    1,386,359.78x = 2,079,523.20 × 439,738.70
  4. Step 4: Simplify right side
    1,386,359.78x = 914,446,828,587.84
  5. Step 5: Solve for x
    x = 914,446,828,587.84/1,386,359.78
  6. Step 6: Final answer
    x = 659,602.83

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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.