Home / 687,563.22-948,822.48-381,621.72

Finding the Fourth Proportional to 687,563.22, 948,822.48 and 381,621.72

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Solution

The fourth proportional to 687,563.22, 948,822.48 and 381,621.72 is: 526,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,563.22 : 948,822.48 = 381,621.72 : x
  2. Step 2: Convert to fraction form
    687,563.22/948,822.48 = 381,621.72/x
  3. Step 3: Cross multiply
    687,563.22x = 948,822.48 × 381,621.72
  4. Step 4: Simplify right side
    687,563.22x = 362,091,266,792.27
  5. Step 5: Solve for x
    x = 362,091,266,792.27/687,563.22
  6. Step 6: Final answer
    x = 526,629.78

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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.