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Finding the Fourth Proportional to 632,119.48, 872,324.85 and 345,639.76

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Solution

The fourth proportional to 632,119.48, 872,324.85 and 345,639.76 is: 476,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,119.48 : 872,324.85 = 345,639.76 : x
  2. Step 2: Convert to fraction form
    632,119.48/872,324.85 = 345,639.76/x
  3. Step 3: Cross multiply
    632,119.48x = 872,324.85 × 345,639.76
  4. Step 4: Simplify right side
    632,119.48x = 301,510,151,796.04
  5. Step 5: Solve for x
    x = 301,510,151,796.04/632,119.48
  6. Step 6: Final answer
    x = 476,982.85

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1.5x scale

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.