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Finding the Fourth Proportional to 561,478.44, 774,857.16 and 306,833.88

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Solution

The fourth proportional to 561,478.44, 774,857.16 and 306,833.88 is: 423,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,478.44 : 774,857.16 = 306,833.88 : x
  2. Step 2: Convert to fraction form
    561,478.44/774,857.16 = 306,833.88/x
  3. Step 3: Cross multiply
    561,478.44x = 774,857.16 × 306,833.88
  4. Step 4: Simplify right side
    561,478.44x = 237,752,428,848.58
  5. Step 5: Solve for x
    x = 237,752,428,848.58/561,478.44
  6. Step 6: Final answer
    x = 423,440.00

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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.