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Finding the Fourth Proportional to 646,699.90, 892,446.12 and 374,926

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Solution

The fourth proportional to 646,699.90, 892,446.12 and 374,926 is: 517,398.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,699.90 : 892,446.12 = 374,926 : x
  2. Step 2: Convert to fraction form
    646,699.90/892,446.12 = 374,926/x
  3. Step 3: Cross multiply
    646,699.90x = 892,446.12 × 374,926
  4. Step 4: Simplify right side
    646,699.90x = 334,601,253,987.12
  5. Step 5: Solve for x
    x = 334,601,253,987.12/646,699.90
  6. Step 6: Final answer
    x = 517,398.03

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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.