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Finding the Fourth Proportional to 1,368,432, 1,888,376.76 and 748,225.80

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Solution

The fourth proportional to 1,368,432, 1,888,376.76 and 748,225.80 is: 1,032,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,432 : 1,888,376.76 = 748,225.80 : x
  2. Step 2: Convert to fraction form
    1,368,432/1,888,376.76 = 748,225.80/x
  3. Step 3: Cross multiply
    1,368,432x = 1,888,376.76 × 748,225.80
  4. Step 4: Simplify right side
    1,368,432x = 1,412,932,211,952.41
  5. Step 5: Solve for x
    x = 1,412,932,211,952.41/1,368,432
  6. Step 6: Final answer
    x = 1,032,519.13

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Half scale
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Double scale
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Similar ratio
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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.