Home / 817,764.73-1,128,490.20-455,179.28

Finding the Fourth Proportional to 817,764.73, 1,128,490.20 and 455,179.28

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Solution

The fourth proportional to 817,764.73, 1,128,490.20 and 455,179.28 is: 628,133.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,764.73 : 1,128,490.20 = 455,179.28 : x
  2. Step 2: Convert to fraction form
    817,764.73/1,128,490.20 = 455,179.28/x
  3. Step 3: Cross multiply
    817,764.73x = 1,128,490.20 × 455,179.28
  4. Step 4: Simplify right side
    817,764.73x = 513,665,351,080.61
  5. Step 5: Solve for x
    x = 513,665,351,080.61/817,764.73
  6. Step 6: Final answer
    x = 628,133.42

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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.