Home / 715,133.96-986,472.32-428,487.98

Finding the Fourth Proportional to 715,133.96, 986,472.32 and 428,487.98

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Solution

The fourth proportional to 715,133.96, 986,472.32 and 428,487.98 is: 591,066.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,133.96 : 986,472.32 = 428,487.98 : x
  2. Step 2: Convert to fraction form
    715,133.96/986,472.32 = 428,487.98/x
  3. Step 3: Cross multiply
    715,133.96x = 986,472.32 × 428,487.98
  4. Step 4: Simplify right side
    715,133.96x = 422,691,527,058.14
  5. Step 5: Solve for x
    x = 422,691,527,058.14/715,133.96
  6. Step 6: Final answer
    x = 591,066.22

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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.