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Finding the Fourth Proportional to 691,266, 953,947.12 and 373,314

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Solution

The fourth proportional to 691,266, 953,947.12 and 373,314 is: 515,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,266 : 953,947.12 = 373,314 : x
  2. Step 2: Convert to fraction form
    691,266/953,947.12 = 373,314/x
  3. Step 3: Cross multiply
    691,266x = 953,947.12 × 373,314
  4. Step 4: Simplify right side
    691,266x = 356,121,815,155.68
  5. Step 5: Solve for x
    x = 356,121,815,155.68/691,266
  6. Step 6: Final answer
    x = 515,173.34

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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.