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Finding the Fourth Proportional to 1,368,436, 1,888,382.28 and 748,229.80

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Solution

The fourth proportional to 1,368,436, 1,888,382.28 and 748,229.80 is: 1,032,524.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,436 : 1,888,382.28 = 748,229.80 : x
  2. Step 2: Convert to fraction form
    1,368,436/1,888,382.28 = 748,229.80/x
  3. Step 3: Cross multiply
    1,368,436x = 1,888,382.28 × 748,229.80
  4. Step 4: Simplify right side
    1,368,436x = 1,412,943,895,687.94
  5. Step 5: Solve for x
    x = 1,412,943,895,687.94/1,368,436
  6. Step 6: Final answer
    x = 1,032,524.65

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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.