Home / 1,405,058.81-1,939,028.09-861,089.50

Finding the Fourth Proportional to 1,405,058.81, 1,939,028.09 and 861,089.50

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Solution

The fourth proportional to 1,405,058.81, 1,939,028.09 and 861,089.50 is: 1,188,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,058.81 : 1,939,028.09 = 861,089.50 : x
  2. Step 2: Convert to fraction form
    1,405,058.81/1,939,028.09 = 861,089.50/x
  3. Step 3: Cross multiply
    1,405,058.81x = 1,939,028.09 × 861,089.50
  4. Step 4: Simplify right side
    1,405,058.81x = 1,669,676,718,808.91
  5. Step 5: Solve for x
    x = 1,669,676,718,808.91/1,405,058.81
  6. Step 6: Final answer
    x = 1,188,332.27

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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.