Home / 714,243.75-985,668.38-391,983.83

Finding the Fourth Proportional to 714,243.75, 985,668.38 and 391,983.83

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Solution

The fourth proportional to 714,243.75, 985,668.38 and 391,983.83 is: 540,944.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,243.75 : 985,668.38 = 391,983.83 : x
  2. Step 2: Convert to fraction form
    714,243.75/985,668.38 = 391,983.83/x
  3. Step 3: Cross multiply
    714,243.75x = 985,668.38 × 391,983.83
  4. Step 4: Simplify right side
    714,243.75x = 386,366,066,702.30
  5. Step 5: Solve for x
    x = 386,366,066,702.30/714,243.75
  6. Step 6: Final answer
    x = 540,944.27

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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.