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Finding the Fourth Proportional to 644,307.17, 889,092.05 and 372,392.68

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Solution

The fourth proportional to 644,307.17, 889,092.05 and 372,392.68 is: 513,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,307.17 : 889,092.05 = 372,392.68 : x
  2. Step 2: Convert to fraction form
    644,307.17/889,092.05 = 372,392.68/x
  3. Step 3: Cross multiply
    644,307.17x = 889,092.05 × 372,392.68
  4. Step 4: Simplify right side
    644,307.17x = 331,091,367,598.26
  5. Step 5: Solve for x
    x = 331,091,367,598.26/644,307.17
  6. Step 6: Final answer
    x = 513,871.93

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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.