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Finding the Fourth Proportional to 628,068.42, 866,959.89 and 373,419

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Solution

The fourth proportional to 628,068.42, 866,959.89 and 373,419 is: 515,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,068.42 : 866,959.89 = 373,419 : x
  2. Step 2: Convert to fraction form
    628,068.42/866,959.89 = 373,419/x
  3. Step 3: Cross multiply
    628,068.42x = 866,959.89 × 373,419
  4. Step 4: Simplify right side
    628,068.42x = 323,739,295,163.91
  5. Step 5: Solve for x
    x = 323,739,295,163.91/628,068.42
  6. Step 6: Final answer
    x = 515,452.27

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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.