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Finding the Fourth Proportional to 719,021.39, 992,270.28 and 396,752.24

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Solution

The fourth proportional to 719,021.39, 992,270.28 and 396,752.24 is: 547,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,021.39 : 992,270.28 = 396,752.24 : x
  2. Step 2: Convert to fraction form
    719,021.39/992,270.28 = 396,752.24/x
  3. Step 3: Cross multiply
    719,021.39x = 992,270.28 × 396,752.24
  4. Step 4: Simplify right side
    719,021.39x = 393,685,451,314.08
  5. Step 5: Solve for x
    x = 393,685,451,314.08/719,021.39
  6. Step 6: Final answer
    x = 547,529.54

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Double scale
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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.