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Finding the Fourth Proportional to 606,971.70, 910,371.15 and 207,630.90

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Solution

The fourth proportional to 606,971.70, 910,371.15 and 207,630.90 is: 311,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,971.70 : 910,371.15 = 207,630.90 : x
  2. Step 2: Convert to fraction form
    606,971.70/910,371.15 = 207,630.90/x
  3. Step 3: Cross multiply
    606,971.70x = 910,371.15 × 207,630.90
  4. Step 4: Simplify right side
    606,971.70x = 189,021,181,208.54
  5. Step 5: Solve for x
    x = 189,021,181,208.54/606,971.70
  6. Step 6: Final answer
    x = 311,416.79

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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.