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Finding the Fourth Proportional to 702,832.88, 969,978.84 and 401,072.24

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Solution

The fourth proportional to 702,832.88, 969,978.84 and 401,072.24 is: 553,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,832.88 : 969,978.84 = 401,072.24 : x
  2. Step 2: Convert to fraction form
    702,832.88/969,978.84 = 401,072.24/x
  3. Step 3: Cross multiply
    702,832.88x = 969,978.84 × 401,072.24
  4. Step 4: Simplify right side
    702,832.88x = 389,031,586,111.40
  5. Step 5: Solve for x
    x = 389,031,586,111.40/702,832.88
  6. Step 6: Final answer
    x = 553,519.33

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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.