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Finding the Fourth Proportional to 497,685.47, 686,806.29 and 271,330.97

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Solution

The fourth proportional to 497,685.47, 686,806.29 and 271,330.97 is: 374,436.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,685.47 : 686,806.29 = 271,330.97 : x
  2. Step 2: Convert to fraction form
    497,685.47/686,806.29 = 271,330.97/x
  3. Step 3: Cross multiply
    497,685.47x = 686,806.29 × 271,330.97
  4. Step 4: Simplify right side
    497,685.47x = 186,351,813,433.77
  5. Step 5: Solve for x
    x = 186,351,813,433.77/497,685.47
  6. Step 6: Final answer
    x = 374,436.92

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1.5x scale

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.