Home / 1,320,672.10-1,981,008.15-1,131,715.30

Finding the Fourth Proportional to 1,320,672.10, 1,981,008.15 and 1,131,715.30

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Solution

The fourth proportional to 1,320,672.10, 1,981,008.15 and 1,131,715.30 is: 1,697,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,672.10 : 1,981,008.15 = 1,131,715.30 : x
  2. Step 2: Convert to fraction form
    1,320,672.10/1,981,008.15 = 1,131,715.30/x
  3. Step 3: Cross multiply
    1,320,672.10x = 1,981,008.15 × 1,131,715.30
  4. Step 4: Simplify right side
    1,320,672.10x = 2,241,937,232,779.69
  5. Step 5: Solve for x
    x = 2,241,937,232,779.69/1,320,672.10
  6. Step 6: Final answer
    x = 1,697,572.95

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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.