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Finding the Fourth Proportional to 747,797.80, 1,121,696.70 and 673,148.20

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Solution

The fourth proportional to 747,797.80, 1,121,696.70 and 673,148.20 is: 1,009,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,797.80 : 1,121,696.70 = 673,148.20 : x
  2. Step 2: Convert to fraction form
    747,797.80/1,121,696.70 = 673,148.20/x
  3. Step 3: Cross multiply
    747,797.80x = 1,121,696.70 × 673,148.20
  4. Step 4: Simplify right side
    747,797.80x = 755,068,114,550.94
  5. Step 5: Solve for x
    x = 755,068,114,550.94/747,797.80
  6. Step 6: Final answer
    x = 1,009,722.30

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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.