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Finding the Fourth Proportional to 691,265, 953,945.74 and 373,313

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Solution

The fourth proportional to 691,265, 953,945.74 and 373,313 is: 515,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,265 : 953,945.74 = 373,313 : x
  2. Step 2: Convert to fraction form
    691,265/953,945.74 = 373,313/x
  3. Step 3: Cross multiply
    691,265x = 953,945.74 × 373,313
  4. Step 4: Simplify right side
    691,265x = 356,120,346,036.62
  5. Step 5: Solve for x
    x = 356,120,346,036.62/691,265
  6. Step 6: Final answer
    x = 515,171.96

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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.