Home / 821,276.46-1,231,700.85-347,718.06

Finding the Fourth Proportional to 821,276.46, 1,231,700.85 and 347,718.06

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Solution

The fourth proportional to 821,276.46, 1,231,700.85 and 347,718.06 is: 521,486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,276.46 : 1,231,700.85 = 347,718.06 : x
  2. Step 2: Convert to fraction form
    821,276.46/1,231,700.85 = 347,718.06/x
  3. Step 3: Cross multiply
    821,276.46x = 1,231,700.85 × 347,718.06
  4. Step 4: Simplify right side
    821,276.46x = 428,284,630,062.35
  5. Step 5: Solve for x
    x = 428,284,630,062.35/821,276.46
  6. Step 6: Final answer
    x = 521,486.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.