Home / 815,547.01-1,223,320.52-254,629.57

Finding the Fourth Proportional to 815,547.01, 1,223,320.52 and 254,629.57

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Solution

The fourth proportional to 815,547.01, 1,223,320.52 and 254,629.57 is: 381,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,547.01 : 1,223,320.52 = 254,629.57 : x
  2. Step 2: Convert to fraction form
    815,547.01/1,223,320.52 = 254,629.57/x
  3. Step 3: Cross multiply
    815,547.01x = 1,223,320.52 × 254,629.57
  4. Step 4: Simplify right side
    815,547.01x = 311,493,577,979.78
  5. Step 5: Solve for x
    x = 311,493,577,979.78/815,547.01
  6. Step 6: Final answer
    x = 381,944.36

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Double scale
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Similar ratio
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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.