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Finding the Fourth Proportional to 747,804, 1,121,708.40 and 186,838.56

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Solution

The fourth proportional to 747,804, 1,121,708.40 and 186,838.56 is: 280,258.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,804 : 1,121,708.40 = 186,838.56 : x
  2. Step 2: Convert to fraction form
    747,804/1,121,708.40 = 186,838.56/x
  3. Step 3: Cross multiply
    747,804x = 1,121,708.40 × 186,838.56
  4. Step 4: Simplify right side
    747,804x = 209,578,382,195.90
  5. Step 5: Solve for x
    x = 209,578,382,195.90/747,804
  6. Step 6: Final answer
    x = 280,258.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.