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Finding the Fourth Proportional to 561,280.40, 774,602.64 and 319,584.09

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Solution

The fourth proportional to 561,280.40, 774,602.64 and 319,584.09 is: 441,046.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,280.40 : 774,602.64 = 319,584.09 : x
  2. Step 2: Convert to fraction form
    561,280.40/774,602.64 = 319,584.09/x
  3. Step 3: Cross multiply
    561,280.40x = 774,602.64 × 319,584.09
  4. Step 4: Simplify right side
    561,280.40x = 247,550,679,816.00
  5. Step 5: Solve for x
    x = 247,550,679,816.00/561,280.40
  6. Step 6: Final answer
    x = 441,046.37

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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.