Home / 693,605.10-1,039,716.45-318,974.70

Finding the Fourth Proportional to 693,605.10, 1,039,716.45 and 318,974.70

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Solution

The fourth proportional to 693,605.10, 1,039,716.45 and 318,974.70 is: 478,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,605.10 : 1,039,716.45 = 318,974.70 : x
  2. Step 2: Convert to fraction form
    693,605.10/1,039,716.45 = 318,974.70/x
  3. Step 3: Cross multiply
    693,605.10x = 1,039,716.45 × 318,974.70
  4. Step 4: Simplify right side
    693,605.10x = 331,643,242,723.82
  5. Step 5: Solve for x
    x = 331,643,242,723.82/693,605.10
  6. Step 6: Final answer
    x = 478,144.18

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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.