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Finding the Fourth Proportional to 628,031.72, 866,675.40 and 341,545.64

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Solution

The fourth proportional to 628,031.72, 866,675.40 and 341,545.64 is: 471,328.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,031.72 : 866,675.40 = 341,545.64 : x
  2. Step 2: Convert to fraction form
    628,031.72/866,675.40 = 341,545.64/x
  3. Step 3: Cross multiply
    628,031.72x = 866,675.40 × 341,545.64
  4. Step 4: Simplify right side
    628,031.72x = 296,009,204,165.26
  5. Step 5: Solve for x
    x = 296,009,204,165.26/628,031.72
  6. Step 6: Final answer
    x = 471,328.43

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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.