Home / 644,449.48-889,223.04-372,417.68

Finding the Fourth Proportional to 644,449.48, 889,223.04 and 372,417.68

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Solution

The fourth proportional to 644,449.48, 889,223.04 and 372,417.68 is: 513,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,449.48 : 889,223.04 = 372,417.68 : x
  2. Step 2: Convert to fraction form
    644,449.48/889,223.04 = 372,417.68/x
  3. Step 3: Cross multiply
    644,449.48x = 889,223.04 × 372,417.68
  4. Step 4: Simplify right side
    644,449.48x = 331,162,381,559.35
  5. Step 5: Solve for x
    x = 331,162,381,559.35/644,449.48
  6. Step 6: Final answer
    x = 513,868.65

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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.