Home / 644,172.35-889,088.40-372,251.70

Finding the Fourth Proportional to 644,172.35, 889,088.40 and 372,251.70

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Solution

The fourth proportional to 644,172.35, 889,088.40 and 372,251.70 is: 513,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,172.35 : 889,088.40 = 372,251.70 : x
  2. Step 2: Convert to fraction form
    644,172.35/889,088.40 = 372,251.70/x
  3. Step 3: Cross multiply
    644,172.35x = 889,088.40 × 372,251.70
  4. Step 4: Simplify right side
    644,172.35x = 330,964,668,350.28
  5. Step 5: Solve for x
    x = 330,964,668,350.28/644,172.35
  6. Step 6: Final answer
    x = 513,782.80

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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.