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Finding the Fourth Proportional to 716,877.47, 989,253.27 and 394,525.96

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Solution

The fourth proportional to 716,877.47, 989,253.27 and 394,525.96 is: 544,425.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,877.47 : 989,253.27 = 394,525.96 : x
  2. Step 2: Convert to fraction form
    716,877.47/989,253.27 = 394,525.96/x
  3. Step 3: Cross multiply
    716,877.47x = 989,253.27 × 394,525.96
  4. Step 4: Simplify right side
    716,877.47x = 390,286,093,556.76
  5. Step 5: Solve for x
    x = 390,286,093,556.76/716,877.47
  6. Step 6: Final answer
    x = 544,425.11

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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.