Home / 766,715.51-1,058,074.56-422,563.72

Finding the Fourth Proportional to 766,715.51, 1,058,074.56 and 422,563.72

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Solution

The fourth proportional to 766,715.51, 1,058,074.56 and 422,563.72 is: 583,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,715.51 : 1,058,074.56 = 422,563.72 : x
  2. Step 2: Convert to fraction form
    766,715.51/1,058,074.56 = 422,563.72/x
  3. Step 3: Cross multiply
    766,715.51x = 1,058,074.56 × 422,563.72
  4. Step 4: Simplify right side
    766,715.51x = 447,103,922,110.96
  5. Step 5: Solve for x
    x = 447,103,922,110.96/766,715.51
  6. Step 6: Final answer
    x = 583,141.88

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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.