Home / 817,588.25-1,128,256.64-455,008.91

Finding the Fourth Proportional to 817,588.25, 1,128,256.64 and 455,008.91

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Solution

The fourth proportional to 817,588.25, 1,128,256.64 and 455,008.91 is: 627,903.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,588.25 : 1,128,256.64 = 455,008.91 : x
  2. Step 2: Convert to fraction form
    817,588.25/1,128,256.64 = 455,008.91/x
  3. Step 3: Cross multiply
    817,588.25x = 1,128,256.64 × 455,008.91
  4. Step 4: Simplify right side
    817,588.25x = 513,366,826,662.49
  5. Step 5: Solve for x
    x = 513,366,826,662.49/817,588.25
  6. Step 6: Final answer
    x = 627,903.87

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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.