Home / 1,243,275.84-1,715,979.60-812,757.60

Finding the Fourth Proportional to 1,243,275.84, 1,715,979.60 and 812,757.60

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Solution

The fourth proportional to 1,243,275.84, 1,715,979.60 and 812,757.60 is: 1,121,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,275.84 : 1,715,979.60 = 812,757.60 : x
  2. Step 2: Convert to fraction form
    1,243,275.84/1,715,979.60 = 812,757.60/x
  3. Step 3: Cross multiply
    1,243,275.84x = 1,715,979.60 × 812,757.60
  4. Step 4: Simplify right side
    1,243,275.84x = 1,394,675,461,344.96
  5. Step 5: Solve for x
    x = 1,394,675,461,344.96/1,243,275.84
  6. Step 6: Final answer
    x = 1,121,774.76

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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.