Home / 815,380.74-1,222,675.47-341,938.98

Finding the Fourth Proportional to 815,380.74, 1,222,675.47 and 341,938.98

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Solution

The fourth proportional to 815,380.74, 1,222,675.47 and 341,938.98 is: 512,742.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,380.74 : 1,222,675.47 = 341,938.98 : x
  2. Step 2: Convert to fraction form
    815,380.74/1,222,675.47 = 341,938.98/x
  3. Step 3: Cross multiply
    815,380.74x = 1,222,675.47 × 341,938.98
  4. Step 4: Simplify right side
    815,380.74x = 418,080,403,082.82
  5. Step 5: Solve for x
    x = 418,080,403,082.82/815,380.74
  6. Step 6: Final answer
    x = 512,742.55

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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.