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Finding the Fourth Proportional to 1,368,641, 1,888,704.86 and 756,780.29

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Solution

The fourth proportional to 1,368,641, 1,888,704.86 and 756,780.29 is: 1,044,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,641 : 1,888,704.86 = 756,780.29 : x
  2. Step 2: Convert to fraction form
    1,368,641/1,888,704.86 = 756,780.29/x
  3. Step 3: Cross multiply
    1,368,641x = 1,888,704.86 × 756,780.29
  4. Step 4: Simplify right side
    1,368,641x = 1,429,334,611,675.21
  5. Step 5: Solve for x
    x = 1,429,334,611,675.21/1,368,641
  6. Step 6: Final answer
    x = 1,044,345.90

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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.