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Finding the Fourth Proportional to 561,426.76, 842,169.30 and 280,849.24

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Solution

The fourth proportional to 561,426.76, 842,169.30 and 280,849.24 is: 421,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,426.76 : 842,169.30 = 280,849.24 : x
  2. Step 2: Convert to fraction form
    561,426.76/842,169.30 = 280,849.24/x
  3. Step 3: Cross multiply
    561,426.76x = 842,169.30 × 280,849.24
  4. Step 4: Simplify right side
    561,426.76x = 236,522,607,856.33
  5. Step 5: Solve for x
    x = 236,522,607,856.33/561,426.76
  6. Step 6: Final answer
    x = 421,288.45

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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.