Home / 817,725.66-1,128,452.79-455,143.74

Finding the Fourth Proportional to 817,725.66, 1,128,452.79 and 455,143.74

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Solution

The fourth proportional to 817,725.66, 1,128,452.79 and 455,143.74 is: 628,093.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,725.66 : 1,128,452.79 = 455,143.74 : x
  2. Step 2: Convert to fraction form
    817,725.66/1,128,452.79 = 455,143.74/x
  3. Step 3: Cross multiply
    817,725.66x = 1,128,452.79 × 455,143.74
  4. Step 4: Simplify right side
    817,725.66x = 513,608,223,254.04
  5. Step 5: Solve for x
    x = 513,608,223,254.04/817,725.66
  6. Step 6: Final answer
    x = 628,093.56

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.