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Finding the Fourth Proportional to 561,100.46, 774,317.40 and 306,451.66

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Solution

The fourth proportional to 561,100.46, 774,317.40 and 306,451.66 is: 422,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,100.46 : 774,317.40 = 306,451.66 : x
  2. Step 2: Convert to fraction form
    561,100.46/774,317.40 = 306,451.66/x
  3. Step 3: Cross multiply
    561,100.46x = 774,317.40 × 306,451.66
  4. Step 4: Simplify right side
    561,100.46x = 237,290,852,596.88
  5. Step 5: Solve for x
    x = 237,290,852,596.88/561,100.46
  6. Step 6: Final answer
    x = 422,902.62

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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.