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Finding the Fourth Proportional to 716,891.44, 989,302.38 and 394,594.60

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Solution

The fourth proportional to 716,891.44, 989,302.38 and 394,594.60 is: 544,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,891.44 : 989,302.38 = 394,594.60 : x
  2. Step 2: Convert to fraction form
    716,891.44/989,302.38 = 394,594.60/x
  3. Step 3: Cross multiply
    716,891.44x = 989,302.38 × 394,594.60
  4. Step 4: Simplify right side
    716,891.44x = 390,373,376,915.15
  5. Step 5: Solve for x
    x = 390,373,376,915.15/716,891.44
  6. Step 6: Final answer
    x = 544,536.25

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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.