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Finding the Fourth Proportional to 632,378.07, 872,688.60 and 345,891.87

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Solution

The fourth proportional to 632,378.07, 872,688.60 and 345,891.87 is: 477,334.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,378.07 : 872,688.60 = 345,891.87 : x
  2. Step 2: Convert to fraction form
    632,378.07/872,688.60 = 345,891.87/x
  3. Step 3: Cross multiply
    632,378.07x = 872,688.60 × 345,891.87
  4. Step 4: Simplify right side
    632,378.07x = 301,855,891,781.68
  5. Step 5: Solve for x
    x = 301,855,891,781.68/632,378.07
  6. Step 6: Final answer
    x = 477,334.53

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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.