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Finding the Fourth Proportional to 670,977, 925,962.66 and 369,171.56

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Solution

The fourth proportional to 670,977, 925,962.66 and 369,171.56 is: 509,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,977 : 925,962.66 = 369,171.56 : x
  2. Step 2: Convert to fraction form
    670,977/925,962.66 = 369,171.56/x
  3. Step 3: Cross multiply
    670,977x = 925,962.66 × 369,171.56
  4. Step 4: Simplify right side
    670,977x = 341,839,079,693.95
  5. Step 5: Solve for x
    x = 341,839,079,693.95/670,977
  6. Step 6: Final answer
    x = 509,464.68

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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.