Home / 990,314.21-1,485,471.32-540,789.88

Finding the Fourth Proportional to 990,314.21, 1,485,471.32 and 540,789.88

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Solution

The fourth proportional to 990,314.21, 1,485,471.32 and 540,789.88 is: 811,184.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,314.21 : 1,485,471.32 = 540,789.88 : x
  2. Step 2: Convert to fraction form
    990,314.21/1,485,471.32 = 540,789.88/x
  3. Step 3: Cross multiply
    990,314.21x = 1,485,471.32 × 540,789.88
  4. Step 4: Simplify right side
    990,314.21x = 803,327,855,281.84
  5. Step 5: Solve for x
    x = 803,327,855,281.84/990,314.21
  6. Step 6: Final answer
    x = 811,184.82

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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.