Home / 628,666.40-867,679.26-356,759.57

Finding the Fourth Proportional to 628,666.40, 867,679.26 and 356,759.57

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Solution

The fourth proportional to 628,666.40, 867,679.26 and 356,759.57 is: 492,396.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,666.40 : 867,679.26 = 356,759.57 : x
  2. Step 2: Convert to fraction form
    628,666.40/867,679.26 = 356,759.57/x
  3. Step 3: Cross multiply
    628,666.40x = 867,679.26 × 356,759.57
  4. Step 4: Simplify right side
    628,666.40x = 309,552,879,695.52
  5. Step 5: Solve for x
    x = 309,552,879,695.52/628,666.40
  6. Step 6: Final answer
    x = 492,396.09

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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.