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Finding the Fourth Proportional to 561,221.73, 774,503.01 and 306,589.32

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Solution

The fourth proportional to 561,221.73, 774,503.01 and 306,589.32 is: 423,102.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,221.73 : 774,503.01 = 306,589.32 : x
  2. Step 2: Convert to fraction form
    561,221.73/774,503.01 = 306,589.32/x
  3. Step 3: Cross multiply
    561,221.73x = 774,503.01 × 306,589.32
  4. Step 4: Simplify right side
    561,221.73x = 237,454,351,173.85
  5. Step 5: Solve for x
    x = 237,454,351,173.85/561,221.73
  6. Step 6: Final answer
    x = 423,102.56

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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.