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Finding the Fourth Proportional to 632,346.64, 872,659.15 and 345,866.72

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Solution

The fourth proportional to 632,346.64, 872,659.15 and 345,866.72 is: 477,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,346.64 : 872,659.15 = 345,866.72 : x
  2. Step 2: Convert to fraction form
    632,346.64/872,659.15 = 345,866.72/x
  3. Step 3: Cross multiply
    632,346.64x = 872,659.15 × 345,866.72
  4. Step 4: Simplify right side
    632,346.64x = 301,823,752,660.53
  5. Step 5: Solve for x
    x = 301,823,752,660.53/632,346.64
  6. Step 6: Final answer
    x = 477,307.44

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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.