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Finding the Fourth Proportional to 644,347.80, 889,147.80 and 372,433.23

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Solution

The fourth proportional to 644,347.80, 889,147.80 and 372,433.23 is: 513,927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,347.80 : 889,147.80 = 372,433.23 : x
  2. Step 2: Convert to fraction form
    644,347.80/889,147.80 = 372,433.23/x
  3. Step 3: Cross multiply
    644,347.80x = 889,147.80 × 372,433.23
  4. Step 4: Simplify right side
    644,347.80x = 331,148,187,101.39
  5. Step 5: Solve for x
    x = 331,148,187,101.39/644,347.80
  6. Step 6: Final answer
    x = 513,927.71

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1.5x scale

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.