Home / 628,939.60-867,950.89-356,982.05

Finding the Fourth Proportional to 628,939.60, 867,950.89 and 356,982.05

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Solution

The fourth proportional to 628,939.60, 867,950.89 and 356,982.05 is: 492,643.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,939.60 : 867,950.89 = 356,982.05 : x
  2. Step 2: Convert to fraction form
    628,939.60/867,950.89 = 356,982.05/x
  3. Step 3: Cross multiply
    628,939.60x = 867,950.89 × 356,982.05
  4. Step 4: Simplify right side
    628,939.60x = 309,842,889,288.95
  5. Step 5: Solve for x
    x = 309,842,889,288.95/628,939.60
  6. Step 6: Final answer
    x = 492,643.32

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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.