Home / 644,775.56-889,799.53-354,414.02

Finding the Fourth Proportional to 644,775.56, 889,799.53 and 354,414.02

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Solution

The fourth proportional to 644,775.56, 889,799.53 and 354,414.02 is: 489,096.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,775.56 : 889,799.53 = 354,414.02 : x
  2. Step 2: Convert to fraction form
    644,775.56/889,799.53 = 354,414.02/x
  3. Step 3: Cross multiply
    644,775.56x = 889,799.53 × 354,414.02
  4. Step 4: Simplify right side
    644,775.56x = 315,357,428,421.41
  5. Step 5: Solve for x
    x = 315,357,428,421.41/644,775.56
  6. Step 6: Final answer
    x = 489,096.44

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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.