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Finding the Fourth Proportional to 627,801.20, 940,319.40 and 557,759.60

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Solution

The fourth proportional to 627,801.20, 940,319.40 and 557,759.60 is: 835,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,801.20 : 940,319.40 = 557,759.60 : x
  2. Step 2: Convert to fraction form
    627,801.20/940,319.40 = 557,759.60/x
  3. Step 3: Cross multiply
    627,801.20x = 940,319.40 × 557,759.60
  4. Step 4: Simplify right side
    627,801.20x = 524,472,172,416.24
  5. Step 5: Solve for x
    x = 524,472,172,416.24/627,801.20
  6. Step 6: Final answer
    x = 835,411.23

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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.