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Finding the Fourth Proportional to 561,596.15, 774,991.29 and 306,949.16

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Solution

The fourth proportional to 561,596.15, 774,991.29 and 306,949.16 is: 423,583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,596.15 : 774,991.29 = 306,949.16 : x
  2. Step 2: Convert to fraction form
    561,596.15/774,991.29 = 306,949.16/x
  3. Step 3: Cross multiply
    561,596.15x = 774,991.29 × 306,949.16
  4. Step 4: Simplify right side
    561,596.15x = 237,882,928,561.35
  5. Step 5: Solve for x
    x = 237,882,928,561.35/561,596.15
  6. Step 6: Final answer
    x = 423,583.62

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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.