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Finding the Fourth Proportional to 670,416.22, 925,193.64 and 408,786.87

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Solution

The fourth proportional to 670,416.22, 925,193.64 and 408,786.87 is: 564,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,416.22 : 925,193.64 = 408,786.87 : x
  2. Step 2: Convert to fraction form
    670,416.22/925,193.64 = 408,786.87/x
  3. Step 3: Cross multiply
    670,416.22x = 925,193.64 × 408,786.87
  4. Step 4: Simplify right side
    670,416.22x = 378,207,012,239.51
  5. Step 5: Solve for x
    x = 378,207,012,239.51/670,416.22
  6. Step 6: Final answer
    x = 564,137.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.