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Finding the Fourth Proportional to 612,455.72, 845,187.99 and 340,514.96

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Solution

The fourth proportional to 612,455.72, 845,187.99 and 340,514.96 is: 469,910.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,455.72 : 845,187.99 = 340,514.96 : x
  2. Step 2: Convert to fraction form
    612,455.72/845,187.99 = 340,514.96/x
  3. Step 3: Cross multiply
    612,455.72x = 845,187.99 × 340,514.96
  4. Step 4: Simplify right side
    612,455.72x = 287,799,154,607.33
  5. Step 5: Solve for x
    x = 287,799,154,607.33/612,455.72
  6. Step 6: Final answer
    x = 469,910.14

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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.