Home / 828,422.87-1,143,239.09-484,288.20

Finding the Fourth Proportional to 828,422.87, 1,143,239.09 and 484,288.20

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Solution

The fourth proportional to 828,422.87, 1,143,239.09 and 484,288.20 is: 668,326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,422.87 : 1,143,239.09 = 484,288.20 : x
  2. Step 2: Convert to fraction form
    828,422.87/1,143,239.09 = 484,288.20/x
  3. Step 3: Cross multiply
    828,422.87x = 1,143,239.09 × 484,288.20
  4. Step 4: Simplify right side
    828,422.87x = 553,657,198,644.30
  5. Step 5: Solve for x
    x = 553,657,198,644.30/828,422.87
  6. Step 6: Final answer
    x = 668,326.80

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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.