Home / 644,284.05-889,087.64-357,822.60

Finding the Fourth Proportional to 644,284.05, 889,087.64 and 357,822.60

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Solution

The fourth proportional to 644,284.05, 889,087.64 and 357,822.60 is: 493,781.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,284.05 : 889,087.64 = 357,822.60 : x
  2. Step 2: Convert to fraction form
    644,284.05/889,087.64 = 357,822.60/x
  3. Step 3: Cross multiply
    644,284.05x = 889,087.64 × 357,822.60
  4. Step 4: Simplify right side
    644,284.05x = 318,135,650,972.66
  5. Step 5: Solve for x
    x = 318,135,650,972.66/644,284.05
  6. Step 6: Final answer
    x = 493,781.67

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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.