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Finding the Fourth Proportional to 717,245.25, 989,798.45 and 394,954.58

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Solution

The fourth proportional to 717,245.25, 989,798.45 and 394,954.58 is: 545,037.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,245.25 : 989,798.45 = 394,954.58 : x
  2. Step 2: Convert to fraction form
    717,245.25/989,798.45 = 394,954.58/x
  3. Step 3: Cross multiply
    717,245.25x = 989,798.45 × 394,954.58
  4. Step 4: Simplify right side
    717,245.25x = 390,925,427,892.38
  5. Step 5: Solve for x
    x = 390,925,427,892.38/717,245.25
  6. Step 6: Final answer
    x = 545,037.32

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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.