Home / 1,512,380.90-2,087,232.73-1,129,743.38

Finding the Fourth Proportional to 1,512,380.90, 2,087,232.73 and 1,129,743.38

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Solution

The fourth proportional to 1,512,380.90, 2,087,232.73 and 1,129,743.38 is: 1,559,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512,380.90 : 2,087,232.73 = 1,129,743.38 : x
  2. Step 2: Convert to fraction form
    1,512,380.90/2,087,232.73 = 1,129,743.38/x
  3. Step 3: Cross multiply
    1,512,380.90x = 2,087,232.73 × 1,129,743.38
  4. Step 4: Simplify right side
    1,512,380.90x = 2,358,037,359,236.83
  5. Step 5: Solve for x
    x = 2,358,037,359,236.83/1,512,380.90
  6. Step 6: Final answer
    x = 1,559,155.74

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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.