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Finding the Fourth Proportional to 561,027.30, 774,223.83 and 306,385.98

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Solution

The fourth proportional to 561,027.30, 774,223.83 and 306,385.98 is: 422,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,027.30 : 774,223.83 = 306,385.98 : x
  2. Step 2: Convert to fraction form
    561,027.30/774,223.83 = 306,385.98/x
  3. Step 3: Cross multiply
    561,027.30x = 774,223.83 × 306,385.98
  4. Step 4: Simplify right side
    561,027.30x = 237,211,326,893.90
  5. Step 5: Solve for x
    x = 237,211,326,893.90/561,027.30
  6. Step 6: Final answer
    x = 422,816.01

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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.