Home / 644,333.67-889,128.44-372,419.18

Finding the Fourth Proportional to 644,333.67, 889,128.44 and 372,419.18

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Solution

The fourth proportional to 644,333.67, 889,128.44 and 372,419.18 is: 513,908.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,333.67 : 889,128.44 = 372,419.18 : x
  2. Step 2: Convert to fraction form
    644,333.67/889,128.44 = 372,419.18/x
  3. Step 3: Cross multiply
    644,333.67x = 889,128.44 × 372,419.18
  4. Step 4: Simplify right side
    644,333.67x = 331,128,478,231.74
  5. Step 5: Solve for x
    x = 331,128,478,231.74/644,333.67
  6. Step 6: Final answer
    x = 513,908.39

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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.