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Finding the Fourth Proportional to 627,425.64, 941,039.64 and 521,489.79

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Solution

The fourth proportional to 627,425.64, 941,039.64 and 521,489.79 is: 782,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,425.64 : 941,039.64 = 521,489.79 : x
  2. Step 2: Convert to fraction form
    627,425.64/941,039.64 = 521,489.79/x
  3. Step 3: Cross multiply
    627,425.64x = 941,039.64 × 521,489.79
  4. Step 4: Simplify right side
    627,425.64x = 490,742,564,245.28
  5. Step 5: Solve for x
    x = 490,742,564,245.28/627,425.64
  6. Step 6: Final answer
    x = 782,152.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.