Home / 1,000,138.90-1,380,180.90-541,243.32

Finding the Fourth Proportional to 1,000,138.90, 1,380,180.90 and 541,243.32

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Solution

The fourth proportional to 1,000,138.90, 1,380,180.90 and 541,243.32 is: 746,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000,138.90 : 1,380,180.90 = 541,243.32 : x
  2. Step 2: Convert to fraction form
    1,000,138.90/1,380,180.90 = 541,243.32/x
  3. Step 3: Cross multiply
    1,000,138.90x = 1,380,180.90 × 541,243.32
  4. Step 4: Simplify right side
    1,000,138.90x = 747,013,692,516.59
  5. Step 5: Solve for x
    x = 747,013,692,516.59/1,000,138.90
  6. Step 6: Final answer
    x = 746,909.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.