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Finding the Fourth Proportional to 875,469, 1,313,203.52 and 210,621

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Solution

The fourth proportional to 875,469, 1,313,203.52 and 210,621 is: 315,931.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,469 : 1,313,203.52 = 210,621 : x
  2. Step 2: Convert to fraction form
    875,469/1,313,203.52 = 210,621/x
  3. Step 3: Cross multiply
    875,469x = 1,313,203.52 × 210,621
  4. Step 4: Simplify right side
    875,469x = 276,588,238,585.92
  5. Step 5: Solve for x
    x = 276,588,238,585.92/875,469
  6. Step 6: Final answer
    x = 315,931.50

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.