Home / 912,272.88-1,368,278.88-313,222.80

Finding the Fourth Proportional to 912,272.88, 1,368,278.88 and 313,222.80

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Solution

The fourth proportional to 912,272.88, 1,368,278.88 and 313,222.80 is: 469,789.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,272.88 : 1,368,278.88 = 313,222.80 : x
  2. Step 2: Convert to fraction form
    912,272.88/1,368,278.88 = 313,222.80/x
  3. Step 3: Cross multiply
    912,272.88x = 1,368,278.88 × 313,222.80
  4. Step 4: Simplify right side
    912,272.88x = 428,576,141,974.46
  5. Step 5: Solve for x
    x = 428,576,141,974.46/912,272.88
  6. Step 6: Final answer
    x = 469,789.41

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1.5x scale

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.