Home / 716,947.89-989,416.26-394,687.95

Finding the Fourth Proportional to 716,947.89, 989,416.26 and 394,687.95

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Solution

The fourth proportional to 716,947.89, 989,416.26 and 394,687.95 is: 544,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,947.89 : 989,416.26 = 394,687.95 : x
  2. Step 2: Convert to fraction form
    716,947.89/989,416.26 = 394,687.95/x
  3. Step 3: Cross multiply
    716,947.89x = 989,416.26 × 394,687.95
  4. Step 4: Simplify right side
    716,947.89x = 390,510,675,356.07
  5. Step 5: Solve for x
    x = 390,510,675,356.07/716,947.89
  6. Step 6: Final answer
    x = 544,684.88

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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.