Home / 1,205,871.71-1,664,040.21-715,861.49

Finding the Fourth Proportional to 1,205,871.71, 1,664,040.21 and 715,861.49

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Solution

The fourth proportional to 1,205,871.71, 1,664,040.21 and 715,861.49 is: 987,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,871.71 : 1,664,040.21 = 715,861.49 : x
  2. Step 2: Convert to fraction form
    1,205,871.71/1,664,040.21 = 715,861.49/x
  3. Step 3: Cross multiply
    1,205,871.71x = 1,664,040.21 × 715,861.49
  4. Step 4: Simplify right side
    1,205,871.71x = 1,191,222,304,150.51
  5. Step 5: Solve for x
    x = 1,191,222,304,150.51/1,205,871.71
  6. Step 6: Final answer
    x = 987,851.61

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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.