Home / 627,140.70-865,813.26-412,903.50

Finding the Fourth Proportional to 627,140.70, 865,813.26 and 412,903.50

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Solution

The fourth proportional to 627,140.70, 865,813.26 and 412,903.50 is: 570,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,140.70 : 865,813.26 = 412,903.50 : x
  2. Step 2: Convert to fraction form
    627,140.70/865,813.26 = 412,903.50/x
  3. Step 3: Cross multiply
    627,140.70x = 865,813.26 × 412,903.50
  4. Step 4: Simplify right side
    627,140.70x = 357,497,325,400.41
  5. Step 5: Solve for x
    x = 357,497,325,400.41/627,140.70
  6. Step 6: Final answer
    x = 570,043.25

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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.