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Finding the Fourth Proportional to 845,042, 1,166,158 and 487,346

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Solution

The fourth proportional to 845,042, 1,166,158 and 487,346 is: 672,537.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,042 : 1,166,158 = 487,346 : x
  2. Step 2: Convert to fraction form
    845,042/1,166,158 = 487,346/x
  3. Step 3: Cross multiply
    845,042x = 1,166,158 × 487,346
  4. Step 4: Simplify right side
    845,042x = 568,322,436,668
  5. Step 5: Solve for x
    x = 568,322,436,668/845,042
  6. Step 6: Final answer
    x = 672,537.50

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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.