Home / 1,320,642.11-1,977,573.41-915,256.55

Finding the Fourth Proportional to 1,320,642.11, 1,977,573.41 and 915,256.55

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Solution

The fourth proportional to 1,320,642.11, 1,977,573.41 and 915,256.55 is: 1,370,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,642.11 : 1,977,573.41 = 915,256.55 : x
  2. Step 2: Convert to fraction form
    1,320,642.11/1,977,573.41 = 915,256.55/x
  3. Step 3: Cross multiply
    1,320,642.11x = 1,977,573.41 × 915,256.55
  4. Step 4: Simplify right side
    1,320,642.11x = 1,809,987,002,144.19
  5. Step 5: Solve for x
    x = 1,809,987,002,144.19/1,320,642.11
  6. Step 6: Final answer
    x = 1,370,535.59

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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.