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Finding the Fourth Proportional to 616,699.78, 851,187.90 and 401,464.96

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Solution

The fourth proportional to 616,699.78, 851,187.90 and 401,464.96 is: 554,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,699.78 : 851,187.90 = 401,464.96 : x
  2. Step 2: Convert to fraction form
    616,699.78/851,187.90 = 401,464.96/x
  3. Step 3: Cross multiply
    616,699.78x = 851,187.90 × 401,464.96
  4. Step 4: Simplify right side
    616,699.78x = 341,722,116,225.98
  5. Step 5: Solve for x
    x = 341,722,116,225.98/616,699.78
  6. Step 6: Final answer
    x = 554,114.22

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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.