Home / 855,448.38-1,180,643.43-492,802.47

Finding the Fourth Proportional to 855,448.38, 1,180,643.43 and 492,802.47

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Solution

The fourth proportional to 855,448.38, 1,180,643.43 and 492,802.47 is: 680,139.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,448.38 : 1,180,643.43 = 492,802.47 : x
  2. Step 2: Convert to fraction form
    855,448.38/1,180,643.43 = 492,802.47/x
  3. Step 3: Cross multiply
    855,448.38x = 1,180,643.43 × 492,802.47
  4. Step 4: Simplify right side
    855,448.38x = 581,823,998,493.27
  5. Step 5: Solve for x
    x = 581,823,998,493.27/855,448.38
  6. Step 6: Final answer
    x = 680,139.23

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1.5x scale

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.