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Finding the Fourth Proportional to 644,591.04, 889,249.44 and 429,521.28

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Solution

The fourth proportional to 644,591.04, 889,249.44 and 429,521.28 is: 592,548.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,591.04 : 889,249.44 = 429,521.28 : x
  2. Step 2: Convert to fraction form
    644,591.04/889,249.44 = 429,521.28/x
  3. Step 3: Cross multiply
    644,591.04x = 889,249.44 × 429,521.28
  4. Step 4: Simplify right side
    644,591.04x = 381,951,557,708.08
  5. Step 5: Solve for x
    x = 381,951,557,708.08/644,591.04
  6. Step 6: Final answer
    x = 592,548.66

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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.