Home / 644,274.88-889,111.38-357,821.80

Finding the Fourth Proportional to 644,274.88, 889,111.38 and 357,821.80

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Solution

The fourth proportional to 644,274.88, 889,111.38 and 357,821.80 is: 493,800.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,274.88 : 889,111.38 = 357,821.80 : x
  2. Step 2: Convert to fraction form
    644,274.88/889,111.38 = 357,821.80/x
  3. Step 3: Cross multiply
    644,274.88x = 889,111.38 × 357,821.80
  4. Step 4: Simplify right side
    644,274.88x = 318,143,434,392.08
  5. Step 5: Solve for x
    x = 318,143,434,392.08/644,274.88
  6. Step 6: Final answer
    x = 493,800.77

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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.