Home / 817,221.92-1,226,970.12-418,138.16

Finding the Fourth Proportional to 817,221.92, 1,226,970.12 and 418,138.16

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Solution

The fourth proportional to 817,221.92, 1,226,970.12 and 418,138.16 is: 627,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,221.92 : 1,226,970.12 = 418,138.16 : x
  2. Step 2: Convert to fraction form
    817,221.92/1,226,970.12 = 418,138.16/x
  3. Step 3: Cross multiply
    817,221.92x = 1,226,970.12 × 418,138.16
  4. Step 4: Simplify right side
    817,221.92x = 513,043,028,351.78
  5. Step 5: Solve for x
    x = 513,043,028,351.78/817,221.92
  6. Step 6: Final answer
    x = 627,789.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.