Home / 872,976.91-1,309,083.56-440,428.18

Finding the Fourth Proportional to 872,976.91, 1,309,083.56 and 440,428.18

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Solution

The fourth proportional to 872,976.91, 1,309,083.56 and 440,428.18 is: 660,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,976.91 : 1,309,083.56 = 440,428.18 : x
  2. Step 2: Convert to fraction form
    872,976.91/1,309,083.56 = 440,428.18/x
  3. Step 3: Cross multiply
    872,976.91x = 1,309,083.56 × 440,428.18
  4. Step 4: Simplify right side
    872,976.91x = 576,557,289,783.47
  5. Step 5: Solve for x
    x = 576,557,289,783.47/872,976.91
  6. Step 6: Final answer
    x = 660,449.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.