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Finding the Fourth Proportional to 632,978.65, 873,612.26 and 361,135.23

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Solution

The fourth proportional to 632,978.65, 873,612.26 and 361,135.23 is: 498,424.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,978.65 : 873,612.26 = 361,135.23 : x
  2. Step 2: Convert to fraction form
    632,978.65/873,612.26 = 361,135.23/x
  3. Step 3: Cross multiply
    632,978.65x = 873,612.26 × 361,135.23
  4. Step 4: Simplify right side
    632,978.65x = 315,492,164,445.92
  5. Step 5: Solve for x
    x = 315,492,164,445.92/632,978.65
  6. Step 6: Final answer
    x = 498,424.65

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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.