Home / 1,386,021.20-2,079,031.80-628,225.70

Finding the Fourth Proportional to 1,386,021.20, 2,079,031.80 and 628,225.70

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Solution

The fourth proportional to 1,386,021.20, 2,079,031.80 and 628,225.70 is: 942,338.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,021.20 : 2,079,031.80 = 628,225.70 : x
  2. Step 2: Convert to fraction form
    1,386,021.20/2,079,031.80 = 628,225.70/x
  3. Step 3: Cross multiply
    1,386,021.20x = 2,079,031.80 × 628,225.70
  4. Step 4: Simplify right side
    1,386,021.20x = 1,306,101,207,877.26
  5. Step 5: Solve for x
    x = 1,306,101,207,877.26/1,386,021.20
  6. Step 6: Final answer
    x = 942,338.55

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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.