Home / 644,539.78-889,464.27-358,086.70

Finding the Fourth Proportional to 644,539.78, 889,464.27 and 358,086.70

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Solution

The fourth proportional to 644,539.78, 889,464.27 and 358,086.70 is: 494,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,539.78 : 889,464.27 = 358,086.70 : x
  2. Step 2: Convert to fraction form
    644,539.78/889,464.27 = 358,086.70/x
  3. Step 3: Cross multiply
    644,539.78x = 889,464.27 × 358,086.70
  4. Step 4: Simplify right side
    644,539.78x = 318,505,325,212.21
  5. Step 5: Solve for x
    x = 318,505,325,212.21/644,539.78
  6. Step 6: Final answer
    x = 494,159.30

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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.