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Finding the Fourth Proportional to 673,813.26, 929,526.78 and 401,689.41

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Solution

The fourth proportional to 673,813.26, 929,526.78 and 401,689.41 is: 554,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,813.26 : 929,526.78 = 401,689.41 : x
  2. Step 2: Convert to fraction form
    673,813.26/929,526.78 = 401,689.41/x
  3. Step 3: Cross multiply
    673,813.26x = 929,526.78 × 401,689.41
  4. Step 4: Simplify right side
    673,813.26x = 373,381,063,837.40
  5. Step 5: Solve for x
    x = 373,381,063,837.40/673,813.26
  6. Step 6: Final answer
    x = 554,131.37

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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.