Home / 644,427.28-889,309.29-357,974.02

Finding the Fourth Proportional to 644,427.28, 889,309.29 and 357,974.02

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Solution

The fourth proportional to 644,427.28, 889,309.29 and 357,974.02 is: 494,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,427.28 : 889,309.29 = 357,974.02 : x
  2. Step 2: Convert to fraction form
    644,427.28/889,309.29 = 357,974.02/x
  3. Step 3: Cross multiply
    644,427.28x = 889,309.29 × 357,974.02
  4. Step 4: Simplify right side
    644,427.28x = 318,349,621,564.65
  5. Step 5: Solve for x
    x = 318,349,621,564.65/644,427.28
  6. Step 6: Final answer
    x = 494,003.95

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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.