Home / 714,080.88-985,441.32-391,785.12

Finding the Fourth Proportional to 714,080.88, 985,441.32 and 391,785.12

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Solution

The fourth proportional to 714,080.88, 985,441.32 and 391,785.12 is: 540,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,080.88 : 985,441.32 = 391,785.12 : x
  2. Step 2: Convert to fraction form
    714,080.88/985,441.32 = 391,785.12/x
  3. Step 3: Cross multiply
    714,080.88x = 985,441.32 × 391,785.12
  4. Step 4: Simplify right side
    714,080.88x = 386,081,245,809.16
  5. Step 5: Solve for x
    x = 386,081,245,809.16/714,080.88
  6. Step 6: Final answer
    x = 540,668.79

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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.