Home / 644,306.63-889,091.30-372,392.13

Finding the Fourth Proportional to 644,306.63, 889,091.30 and 372,392.13

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Solution

The fourth proportional to 644,306.63, 889,091.30 and 372,392.13 is: 513,871.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,306.63 : 889,091.30 = 372,392.13 : x
  2. Step 2: Convert to fraction form
    644,306.63/889,091.30 = 372,392.13/x
  3. Step 3: Cross multiply
    644,306.63x = 889,091.30 × 372,392.13
  4. Step 4: Simplify right side
    644,306.63x = 331,090,601,109.51
  5. Step 5: Solve for x
    x = 331,090,601,109.51/644,306.63
  6. Step 6: Final answer
    x = 513,871.17

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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.