Home / 718,081.43-990,954.38-395,792.81

Finding the Fourth Proportional to 718,081.43, 990,954.38 and 395,792.81

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Solution

The fourth proportional to 718,081.43, 990,954.38 and 395,792.81 is: 546,195.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,081.43 : 990,954.38 = 395,792.81 : x
  2. Step 2: Convert to fraction form
    718,081.43/990,954.38 = 395,792.81/x
  3. Step 3: Cross multiply
    718,081.43x = 990,954.38 × 395,792.81
  4. Step 4: Simplify right side
    718,081.43x = 392,212,614,492.57
  5. Step 5: Solve for x
    x = 392,212,614,492.57/718,081.43
  6. Step 6: Final answer
    x = 546,195.18

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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.