Home / 1,310,002.80-1,960,338.60-908,761.20

Finding the Fourth Proportional to 1,310,002.80, 1,960,338.60 and 908,761.20

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Solution

The fourth proportional to 1,310,002.80, 1,960,338.60 and 908,761.20 is: 1,359,905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,002.80 : 1,960,338.60 = 908,761.20 : x
  2. Step 2: Convert to fraction form
    1,310,002.80/1,960,338.60 = 908,761.20/x
  3. Step 3: Cross multiply
    1,310,002.80x = 1,960,338.60 × 908,761.20
  4. Step 4: Simplify right side
    1,310,002.80x = 1,781,479,658,542.32
  5. Step 5: Solve for x
    x = 1,781,479,658,542.32/1,310,002.80
  6. Step 6: Final answer
    x = 1,359,905.23

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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.