Home / 821,648.20-1,231,684.98-347,681.56

Finding the Fourth Proportional to 821,648.20, 1,231,684.98 and 347,681.56

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Solution

The fourth proportional to 821,648.20, 1,231,684.98 and 347,681.56 is: 521,189.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,648.20 : 1,231,684.98 = 347,681.56 : x
  2. Step 2: Convert to fraction form
    821,648.20/1,231,684.98 = 347,681.56/x
  3. Step 3: Cross multiply
    821,648.20x = 1,231,684.98 × 347,681.56
  4. Step 4: Simplify right side
    821,648.20x = 428,234,155,274.97
  5. Step 5: Solve for x
    x = 428,234,155,274.97/821,648.20
  6. Step 6: Final answer
    x = 521,189.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.