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Finding the Fourth Proportional to 497,489.50, 686,554.04 and 282,665.95

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Solution

The fourth proportional to 497,489.50, 686,554.04 and 282,665.95 is: 390,089.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,489.50 : 686,554.04 = 282,665.95 : x
  2. Step 2: Convert to fraction form
    497,489.50/686,554.04 = 282,665.95/x
  3. Step 3: Cross multiply
    497,489.50x = 686,554.04 × 282,665.95
  4. Step 4: Simplify right side
    497,489.50x = 194,065,449,942.94
  5. Step 5: Solve for x
    x = 194,065,449,942.94/497,489.50
  6. Step 6: Final answer
    x = 390,089.54

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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.