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Finding the Fourth Proportional to 561,321.14, 774,623.17 and 306,672.33

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Solution

The fourth proportional to 561,321.14, 774,623.17 and 306,672.33 is: 423,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,321.14 : 774,623.17 = 306,672.33 : x
  2. Step 2: Convert to fraction form
    561,321.14/774,623.17 = 306,672.33/x
  3. Step 3: Cross multiply
    561,321.14x = 774,623.17 × 306,672.33
  4. Step 4: Simplify right side
    561,321.14x = 237,555,492,209.32
  5. Step 5: Solve for x
    x = 237,555,492,209.32/561,321.14
  6. Step 6: Final answer
    x = 423,207.81

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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.