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Finding the Fourth Proportional to 1,318,568.16, 1,819,659.84 and 745,694

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Solution

The fourth proportional to 1,318,568.16, 1,819,659.84 and 745,694 is: 1,029,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,568.16 : 1,819,659.84 = 745,694 : x
  2. Step 2: Convert to fraction form
    1,318,568.16/1,819,659.84 = 745,694/x
  3. Step 3: Cross multiply
    1,318,568.16x = 1,819,659.84 × 745,694
  4. Step 4: Simplify right side
    1,318,568.16x = 1,356,909,424,728.96
  5. Step 5: Solve for x
    x = 1,356,909,424,728.96/1,318,568.16
  6. Step 6: Final answer
    x = 1,029,077.95

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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.