Home / 766,715.45-1,058,074.32-422,563.66

Finding the Fourth Proportional to 766,715.45, 1,058,074.32 and 422,563.66

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Solution

The fourth proportional to 766,715.45, 1,058,074.32 and 422,563.66 is: 583,141.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,715.45 : 1,058,074.32 = 422,563.66 : x
  2. Step 2: Convert to fraction form
    766,715.45/1,058,074.32 = 422,563.66/x
  3. Step 3: Cross multiply
    766,715.45x = 1,058,074.32 × 422,563.66
  4. Step 4: Simplify right side
    766,715.45x = 447,103,760,118.42
  5. Step 5: Solve for x
    x = 447,103,760,118.42/766,715.45
  6. Step 6: Final answer
    x = 583,141.71

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Double scale
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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.