Home / 644,283.05-889,086.26-357,821.60

Finding the Fourth Proportional to 644,283.05, 889,086.26 and 357,821.60

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Solution

The fourth proportional to 644,283.05, 889,086.26 and 357,821.60 is: 493,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,283.05 : 889,086.26 = 357,821.60 : x
  2. Step 2: Convert to fraction form
    644,283.05/889,086.26 = 357,821.60/x
  3. Step 3: Cross multiply
    644,283.05x = 889,086.26 × 357,821.60
  4. Step 4: Simplify right side
    644,283.05x = 318,134,264,540.34
  5. Step 5: Solve for x
    x = 318,134,264,540.34/644,283.05
  6. Step 6: Final answer
    x = 493,780.28

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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.