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Finding the Fourth Proportional to 691,251, 953,926.38 and 373,299

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Solution

The fourth proportional to 691,251, 953,926.38 and 373,299 is: 515,152.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,251 : 953,926.38 = 373,299 : x
  2. Step 2: Convert to fraction form
    691,251/953,926.38 = 373,299/x
  3. Step 3: Cross multiply
    691,251x = 953,926.38 × 373,299
  4. Step 4: Simplify right side
    691,251x = 356,099,763,727.62
  5. Step 5: Solve for x
    x = 356,099,763,727.62/691,251
  6. Step 6: Final answer
    x = 515,152.62

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1.5x scale

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.