Home / 821,079.60-1,231,446.60-347,780.40

Finding the Fourth Proportional to 821,079.60, 1,231,446.60 and 347,780.40

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Solution

The fourth proportional to 821,079.60, 1,231,446.60 and 347,780.40 is: 521,597.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,079.60 : 1,231,446.60 = 347,780.40 : x
  2. Step 2: Convert to fraction form
    821,079.60/1,231,446.60 = 347,780.40/x
  3. Step 3: Cross multiply
    821,079.60x = 1,231,446.60 × 347,780.40
  4. Step 4: Simplify right side
    821,079.60x = 428,272,991,126.64
  5. Step 5: Solve for x
    x = 428,272,991,126.64/821,079.60
  6. Step 6: Final answer
    x = 521,597.41

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1.5x scale

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.