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Finding the Fourth Proportional to 561,445.80, 774,797.22 and 306,796.98

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Solution

The fourth proportional to 561,445.80, 774,797.22 and 306,796.98 is: 423,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,445.80 : 774,797.22 = 306,796.98 : x
  2. Step 2: Convert to fraction form
    561,445.80/774,797.22 = 306,796.98/x
  3. Step 3: Cross multiply
    561,445.80x = 774,797.22 × 306,796.98
  4. Step 4: Simplify right side
    561,445.80x = 237,705,447,208.40
  5. Step 5: Solve for x
    x = 237,705,447,208.40/561,445.80
  6. Step 6: Final answer
    x = 423,380.93

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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.