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Finding the Fourth Proportional to 608,980.60, 911,721.30 and 372,784.60

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Solution

The fourth proportional to 608,980.60, 911,721.30 and 372,784.60 is: 558,105.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,980.60 : 911,721.30 = 372,784.60 : x
  2. Step 2: Convert to fraction form
    608,980.60/911,721.30 = 372,784.60/x
  3. Step 3: Cross multiply
    608,980.60x = 911,721.30 × 372,784.60
  4. Step 4: Simplify right side
    608,980.60x = 339,875,660,131.98
  5. Step 5: Solve for x
    x = 339,875,660,131.98/608,980.60
  6. Step 6: Final answer
    x = 558,105.89

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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.