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Finding the Fourth Proportional to 1,432,456.05, 1,976,826.76 and 787,893.17

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Solution

The fourth proportional to 1,432,456.05, 1,976,826.76 and 787,893.17 is: 1,087,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,456.05 : 1,976,826.76 = 787,893.17 : x
  2. Step 2: Convert to fraction form
    1,432,456.05/1,976,826.76 = 787,893.17/x
  3. Step 3: Cross multiply
    1,432,456.05x = 1,976,826.76 × 787,893.17
  4. Step 4: Simplify right side
    1,432,456.05x = 1,557,528,290,623.36
  5. Step 5: Solve for x
    x = 1,557,528,290,623.36/1,432,456.05
  6. Step 6: Final answer
    x = 1,087,313.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.