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Finding the Fourth Proportional to 628,046.72, 866,696.10 and 341,560.64

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Solution

The fourth proportional to 628,046.72, 866,696.10 and 341,560.64 is: 471,349.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,046.72 : 866,696.10 = 341,560.64 : x
  2. Step 2: Convert to fraction form
    628,046.72/866,696.10 = 341,560.64/x
  3. Step 3: Cross multiply
    628,046.72x = 866,696.10 × 341,560.64
  4. Step 4: Simplify right side
    628,046.72x = 296,029,274,601.50
  5. Step 5: Solve for x
    x = 296,029,274,601.50/628,046.72
  6. Step 6: Final answer
    x = 471,349.13

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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.