Home / 813,209.28-1,122,239.16-450,640.23

Finding the Fourth Proportional to 813,209.28, 1,122,239.16 and 450,640.23

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Solution

The fourth proportional to 813,209.28, 1,122,239.16 and 450,640.23 is: 621,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,209.28 : 1,122,239.16 = 450,640.23 : x
  2. Step 2: Convert to fraction form
    813,209.28/1,122,239.16 = 450,640.23/x
  3. Step 3: Cross multiply
    813,209.28x = 1,122,239.16 × 450,640.23
  4. Step 4: Simplify right side
    813,209.28x = 505,726,113,177.41
  5. Step 5: Solve for x
    x = 505,726,113,177.41/813,209.28
  6. Step 6: Final answer
    x = 621,889.25

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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.