Home / 766,720.02-1,058,080.80-422,568.56

Finding the Fourth Proportional to 766,720.02, 1,058,080.80 and 422,568.56

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Solution

The fourth proportional to 766,720.02, 1,058,080.80 and 422,568.56 is: 583,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,720.02 : 1,058,080.80 = 422,568.56 : x
  2. Step 2: Convert to fraction form
    766,720.02/1,058,080.80 = 422,568.56/x
  3. Step 3: Cross multiply
    766,720.02x = 1,058,080.80 × 422,568.56
  4. Step 4: Simplify right side
    766,720.02x = 447,111,680,019.65
  5. Step 5: Solve for x
    x = 447,111,680,019.65/766,720.02
  6. Step 6: Final answer
    x = 583,148.57

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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.