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Finding the Fourth Proportional to 674,805.48, 931,231.77 and 368,883.21

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Solution

The fourth proportional to 674,805.48, 931,231.77 and 368,883.21 is: 509,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,805.48 : 931,231.77 = 368,883.21 : x
  2. Step 2: Convert to fraction form
    674,805.48/931,231.77 = 368,883.21/x
  3. Step 3: Cross multiply
    674,805.48x = 931,231.77 × 368,883.21
  4. Step 4: Simplify right side
    674,805.48x = 343,515,764,571.58
  5. Step 5: Solve for x
    x = 343,515,764,571.58/674,805.48
  6. Step 6: Final answer
    x = 509,058.95

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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.