Home / 813,139.47-1,122,139.11-450,569.39

Finding the Fourth Proportional to 813,139.47, 1,122,139.11 and 450,569.39

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Solution

The fourth proportional to 813,139.47, 1,122,139.11 and 450,569.39 is: 621,789.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,139.47 : 1,122,139.11 = 450,569.39 : x
  2. Step 2: Convert to fraction form
    813,139.47/1,122,139.11 = 450,569.39/x
  3. Step 3: Cross multiply
    813,139.47x = 1,122,139.11 × 450,569.39
  4. Step 4: Simplify right side
    813,139.47x = 505,601,528,677.15
  5. Step 5: Solve for x
    x = 505,601,528,677.15/813,139.47
  6. Step 6: Final answer
    x = 621,789.43

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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.