Home / 1,245,139.30-1,867,708.95-930,211.30

Finding the Fourth Proportional to 1,245,139.30, 1,867,708.95 and 930,211.30

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Solution

The fourth proportional to 1,245,139.30, 1,867,708.95 and 930,211.30 is: 1,395,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,139.30 : 1,867,708.95 = 930,211.30 : x
  2. Step 2: Convert to fraction form
    1,245,139.30/1,867,708.95 = 930,211.30/x
  3. Step 3: Cross multiply
    1,245,139.30x = 1,867,708.95 × 930,211.30
  4. Step 4: Simplify right side
    1,245,139.30x = 1,737,363,970,401.14
  5. Step 5: Solve for x
    x = 1,737,363,970,401.14/1,245,139.30
  6. Step 6: Final answer
    x = 1,395,316.95

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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.