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Finding the Fourth Proportional to 627,259.82, 940,778.69 and 285,624.90

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Solution

The fourth proportional to 627,259.82, 940,778.69 and 285,624.90 is: 428,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,259.82 : 940,778.69 = 285,624.90 : x
  2. Step 2: Convert to fraction form
    627,259.82/940,778.69 = 285,624.90/x
  3. Step 3: Cross multiply
    627,259.82x = 940,778.69 × 285,624.90
  4. Step 4: Simplify right side
    627,259.82x = 268,709,817,825.26
  5. Step 5: Solve for x
    x = 268,709,817,825.26/627,259.82
  6. Step 6: Final answer
    x = 428,386.79

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1.5x scale

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.