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Finding the Fourth Proportional to 607,179.78, 910,784.25 and 207,817.92

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Solution

The fourth proportional to 607,179.78, 910,784.25 and 207,817.92 is: 311,731.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,179.78 : 910,784.25 = 207,817.92 : x
  2. Step 2: Convert to fraction form
    607,179.78/910,784.25 = 207,817.92/x
  3. Step 3: Cross multiply
    607,179.78x = 910,784.25 × 207,817.92
  4. Step 4: Simplify right side
    607,179.78x = 189,277,288,403.76
  5. Step 5: Solve for x
    x = 189,277,288,403.76/607,179.78
  6. Step 6: Final answer
    x = 311,731.87

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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.