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Finding the Fourth Proportional to 699,338.34, 965,085.48 and 393,414.93

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Solution

The fourth proportional to 699,338.34, 965,085.48 and 393,414.93 is: 542,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,338.34 : 965,085.48 = 393,414.93 : x
  2. Step 2: Convert to fraction form
    699,338.34/965,085.48 = 393,414.93/x
  3. Step 3: Cross multiply
    699,338.34x = 965,085.48 × 393,414.93
  4. Step 4: Simplify right side
    699,338.34x = 379,679,036,558.22
  5. Step 5: Solve for x
    x = 379,679,036,558.22/699,338.34
  6. Step 6: Final answer
    x = 542,911.80

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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.