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Finding the Fourth Proportional to 568,065.80, 852,098.70 and 318,715.40

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Solution

The fourth proportional to 568,065.80, 852,098.70 and 318,715.40 is: 478,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,065.80 : 852,098.70 = 318,715.40 : x
  2. Step 2: Convert to fraction form
    568,065.80/852,098.70 = 318,715.40/x
  3. Step 3: Cross multiply
    568,065.80x = 852,098.70 × 318,715.40
  4. Step 4: Simplify right side
    568,065.80x = 271,576,978,009.98
  5. Step 5: Solve for x
    x = 271,576,978,009.98/568,065.80
  6. Step 6: Final answer
    x = 478,073.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.