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Finding the Fourth Proportional to 716,842.93, 989,235.63 and 394,546.11

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Solution

The fourth proportional to 716,842.93, 989,235.63 and 394,546.11 is: 544,469.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,842.93 : 989,235.63 = 394,546.11 : x
  2. Step 2: Convert to fraction form
    716,842.93/989,235.63 = 394,546.11/x
  3. Step 3: Cross multiply
    716,842.93x = 989,235.63 × 394,546.11
  4. Step 4: Simplify right side
    716,842.93x = 390,299,069,689.90
  5. Step 5: Solve for x
    x = 390,299,069,689.90/716,842.93
  6. Step 6: Final answer
    x = 544,469.44

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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.