Home / 1,240,787.81-1,711,851.14-811,319.33

Finding the Fourth Proportional to 1,240,787.81, 1,711,851.14 and 811,319.33

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Solution

The fourth proportional to 1,240,787.81, 1,711,851.14 and 811,319.33 is: 1,119,335.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,787.81 : 1,711,851.14 = 811,319.33 : x
  2. Step 2: Convert to fraction form
    1,240,787.81/1,711,851.14 = 811,319.33/x
  3. Step 3: Cross multiply
    1,240,787.81x = 1,711,851.14 × 811,319.33
  4. Step 4: Simplify right side
    1,240,787.81x = 1,388,857,913,768.13
  5. Step 5: Solve for x
    x = 1,388,857,913,768.13/1,240,787.81
  6. Step 6: Final answer
    x = 1,119,335.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.