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Finding the Fourth Proportional to 691,263, 953,942.98 and 373,311

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Solution

The fourth proportional to 691,263, 953,942.98 and 373,311 is: 515,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,263 : 953,942.98 = 373,311 : x
  2. Step 2: Convert to fraction form
    691,263/953,942.98 = 373,311/x
  3. Step 3: Cross multiply
    691,263x = 953,942.98 × 373,311
  4. Step 4: Simplify right side
    691,263x = 356,117,407,806.78
  5. Step 5: Solve for x
    x = 356,117,407,806.78/691,263
  6. Step 6: Final answer
    x = 515,169.20

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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.