Home / 818,505.12-1,128,996.24-512,049.76

Finding the Fourth Proportional to 818,505.12, 1,128,996.24 and 512,049.76

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Solution

The fourth proportional to 818,505.12, 1,128,996.24 and 512,049.76 is: 706,290.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,505.12 : 1,128,996.24 = 512,049.76 : x
  2. Step 2: Convert to fraction form
    818,505.12/1,128,996.24 = 512,049.76/x
  3. Step 3: Cross multiply
    818,505.12x = 1,128,996.24 × 512,049.76
  4. Step 4: Simplify right side
    818,505.12x = 578,102,253,732.90
  5. Step 5: Solve for x
    x = 578,102,253,732.90/818,505.12
  6. Step 6: Final answer
    x = 706,290.33

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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.