Home / 1,289,986.13-1,780,182.01-709,219.15

Finding the Fourth Proportional to 1,289,986.13, 1,780,182.01 and 709,219.15

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Solution

The fourth proportional to 1,289,986.13, 1,780,182.01 and 709,219.15 is: 978,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,986.13 : 1,780,182.01 = 709,219.15 : x
  2. Step 2: Convert to fraction form
    1,289,986.13/1,780,182.01 = 709,219.15/x
  3. Step 3: Cross multiply
    1,289,986.13x = 1,780,182.01 × 709,219.15
  4. Step 4: Simplify right side
    1,289,986.13x = 1,262,539,165,753.99
  5. Step 5: Solve for x
    x = 1,262,539,165,753.99/1,289,986.13
  6. Step 6: Final answer
    x = 978,723.05

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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.