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Finding the Fourth Proportional to 639,067.42, 881,907.51 and 352,590.22

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Solution

The fourth proportional to 639,067.42, 881,907.51 and 352,590.22 is: 486,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,067.42 : 881,907.51 = 352,590.22 : x
  2. Step 2: Convert to fraction form
    639,067.42/881,907.51 = 352,590.22/x
  3. Step 3: Cross multiply
    639,067.42x = 881,907.51 × 352,590.22
  4. Step 4: Simplify right side
    639,067.42x = 310,951,962,970.55
  5. Step 5: Solve for x
    x = 310,951,962,970.55/639,067.42
  6. Step 6: Final answer
    x = 486,571.45

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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.