Home / 1,490,986.80-2,057,585.24-811,922.76

Finding the Fourth Proportional to 1,490,986.80, 2,057,585.24 and 811,922.76

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Solution

The fourth proportional to 1,490,986.80, 2,057,585.24 and 811,922.76 is: 1,120,466.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,986.80 : 2,057,585.24 = 811,922.76 : x
  2. Step 2: Convert to fraction form
    1,490,986.80/2,057,585.24 = 811,922.76/x
  3. Step 3: Cross multiply
    1,490,986.80x = 2,057,585.24 × 811,922.76
  4. Step 4: Simplify right side
    1,490,986.80x = 1,670,600,286,996.06
  5. Step 5: Solve for x
    x = 1,670,600,286,996.06/1,490,986.80
  6. Step 6: Final answer
    x = 1,120,466.18

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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.