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Finding the Fourth Proportional to 674,744.56, 931,148.44 and 388,258.96

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Solution

The fourth proportional to 674,744.56, 931,148.44 and 388,258.96 is: 535,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,744.56 : 931,148.44 = 388,258.96 : x
  2. Step 2: Convert to fraction form
    674,744.56/931,148.44 = 388,258.96/x
  3. Step 3: Cross multiply
    674,744.56x = 931,148.44 × 388,258.96
  4. Step 4: Simplify right side
    674,744.56x = 361,526,724,920.02
  5. Step 5: Solve for x
    x = 361,526,724,920.02/674,744.56
  6. Step 6: Final answer
    x = 535,797.91

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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.