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Finding the Fourth Proportional to 561,616.20, 775,032.30 and 306,971.64

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Solution

The fourth proportional to 561,616.20, 775,032.30 and 306,971.64 is: 423,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,616.20 : 775,032.30 = 306,971.64 : x
  2. Step 2: Convert to fraction form
    561,616.20/775,032.30 = 306,971.64/x
  3. Step 3: Cross multiply
    561,616.20x = 775,032.30 × 306,971.64
  4. Step 4: Simplify right side
    561,616.20x = 237,912,936,183.97
  5. Step 5: Solve for x
    x = 237,912,936,183.97/561,616.20
  6. Step 6: Final answer
    x = 423,621.93

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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.