Home / 815,939.09-1,223,871.28-283,501.79

Finding the Fourth Proportional to 815,939.09, 1,223,871.28 and 283,501.79

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Solution

The fourth proportional to 815,939.09, 1,223,871.28 and 283,501.79 is: 425,239.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,939.09 : 1,223,871.28 = 283,501.79 : x
  2. Step 2: Convert to fraction form
    815,939.09/1,223,871.28 = 283,501.79/x
  3. Step 3: Cross multiply
    815,939.09x = 1,223,871.28 × 283,501.79
  4. Step 4: Simplify right side
    815,939.09x = 346,969,700,960.52
  5. Step 5: Solve for x
    x = 346,969,700,960.52/815,939.09
  6. Step 6: Final answer
    x = 425,239.71

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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.