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Finding the Fourth Proportional to 632,435.35, 872,620.93 and 387,471.86

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Solution

The fourth proportional to 632,435.35, 872,620.93 and 387,471.86 is: 534,625.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,435.35 : 872,620.93 = 387,471.86 : x
  2. Step 2: Convert to fraction form
    632,435.35/872,620.93 = 387,471.86/x
  3. Step 3: Cross multiply
    632,435.35x = 872,620.93 × 387,471.86
  4. Step 4: Simplify right side
    632,435.35x = 338,116,054,822.03
  5. Step 5: Solve for x
    x = 338,116,054,822.03/632,435.35
  6. Step 6: Final answer
    x = 534,625.48

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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.