Home / 644,427.78-889,309.98-357,974.52

Finding the Fourth Proportional to 644,427.78, 889,309.98 and 357,974.52

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Solution

The fourth proportional to 644,427.78, 889,309.98 and 357,974.52 is: 494,004.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,427.78 : 889,309.98 = 357,974.52 : x
  2. Step 2: Convert to fraction form
    644,427.78/889,309.98 = 357,974.52/x
  3. Step 3: Cross multiply
    644,427.78x = 889,309.98 × 357,974.52
  4. Step 4: Simplify right side
    644,427.78x = 318,350,313,221.71
  5. Step 5: Solve for x
    x = 318,350,313,221.71/644,427.78
  6. Step 6: Final answer
    x = 494,004.64

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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.