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Finding the Fourth Proportional to 647,860.77, 894,066.80 and 361,374.66

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Solution

The fourth proportional to 647,860.77, 894,066.80 and 361,374.66 is: 498,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,860.77 : 894,066.80 = 361,374.66 : x
  2. Step 2: Convert to fraction form
    647,860.77/894,066.80 = 361,374.66/x
  3. Step 3: Cross multiply
    647,860.77x = 894,066.80 × 361,374.66
  4. Step 4: Simplify right side
    647,860.77x = 323,093,084,060.42
  5. Step 5: Solve for x
    x = 323,093,084,060.42/647,860.77
  6. Step 6: Final answer
    x = 498,707.59

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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.