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Finding the Fourth Proportional to 608,997.60, 911,746.80 and 372,801.60

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Solution

The fourth proportional to 608,997.60, 911,746.80 and 372,801.60 is: 558,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,997.60 : 911,746.80 = 372,801.60 : x
  2. Step 2: Convert to fraction form
    608,997.60/911,746.80 = 372,801.60/x
  3. Step 3: Cross multiply
    608,997.60x = 911,746.80 × 372,801.60
  4. Step 4: Simplify right side
    608,997.60x = 339,900,665,834.88
  5. Step 5: Solve for x
    x = 339,900,665,834.88/608,997.60
  6. Step 6: Final answer
    x = 558,131.37

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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.