Home / 817,764.60-1,128,490.03-455,179.15

Finding the Fourth Proportional to 817,764.60, 1,128,490.03 and 455,179.15

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Solution

The fourth proportional to 817,764.60, 1,128,490.03 and 455,179.15 is: 628,133.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,764.60 : 1,128,490.03 = 455,179.15 : x
  2. Step 2: Convert to fraction form
    817,764.60/1,128,490.03 = 455,179.15/x
  3. Step 3: Cross multiply
    817,764.60x = 1,128,490.03 × 455,179.15
  4. Step 4: Simplify right side
    817,764.60x = 513,665,132,638.88
  5. Step 5: Solve for x
    x = 513,665,132,638.88/817,764.60
  6. Step 6: Final answer
    x = 628,133.25

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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.