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Finding the Fourth Proportional to 659,572.72, 989,529.65 and 386,249.75

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Solution

The fourth proportional to 659,572.72, 989,529.65 and 386,249.75 is: 579,474.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,572.72 : 989,529.65 = 386,249.75 : x
  2. Step 2: Convert to fraction form
    659,572.72/989,529.65 = 386,249.75/x
  3. Step 3: Cross multiply
    659,572.72x = 989,529.65 × 386,249.75
  4. Step 4: Simplify right side
    659,572.72x = 382,205,578,210.36
  5. Step 5: Solve for x
    x = 382,205,578,210.36/659,572.72
  6. Step 6: Final answer
    x = 579,474.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.