Home / 1,245,143.80-1,867,715.70-930,215.80

Finding the Fourth Proportional to 1,245,143.80, 1,867,715.70 and 930,215.80

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Solution

The fourth proportional to 1,245,143.80, 1,867,715.70 and 930,215.80 is: 1,395,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,143.80 : 1,867,715.70 = 930,215.80 : x
  2. Step 2: Convert to fraction form
    1,245,143.80/1,867,715.70 = 930,215.80/x
  3. Step 3: Cross multiply
    1,245,143.80x = 1,867,715.70 × 930,215.80
  4. Step 4: Simplify right side
    1,245,143.80x = 1,737,378,654,048.06
  5. Step 5: Solve for x
    x = 1,737,378,654,048.06/1,245,143.80
  6. Step 6: Final answer
    x = 1,395,323.70

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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.