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Finding the Fourth Proportional to 561,112.13, 774,334.74 and 306,463.92

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Solution

The fourth proportional to 561,112.13, 774,334.74 and 306,463.92 is: 422,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,112.13 : 774,334.74 = 306,463.92 : x
  2. Step 2: Convert to fraction form
    561,112.13/774,334.74 = 306,463.92/x
  3. Step 3: Cross multiply
    561,112.13x = 774,334.74 × 306,463.92
  4. Step 4: Simplify right side
    561,112.13x = 237,305,659,812.58
  5. Step 5: Solve for x
    x = 237,305,659,812.58/561,112.13
  6. Step 6: Final answer
    x = 422,920.21

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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.