Home / 817,758.17-1,128,481.15-455,172.70

Finding the Fourth Proportional to 817,758.17, 1,128,481.15 and 455,172.70

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Solution

The fourth proportional to 817,758.17, 1,128,481.15 and 455,172.70 is: 628,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,758.17 : 1,128,481.15 = 455,172.70 : x
  2. Step 2: Convert to fraction form
    817,758.17/1,128,481.15 = 455,172.70/x
  3. Step 3: Cross multiply
    817,758.17x = 1,128,481.15 × 455,172.70
  4. Step 4: Simplify right side
    817,758.17x = 513,653,811,363.83
  5. Step 5: Solve for x
    x = 513,653,811,363.83/817,758.17
  6. Step 6: Final answer
    x = 628,124.34

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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.