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Finding the Fourth Proportional to 609,265.32, 840,879 and 379,859.82

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Solution

The fourth proportional to 609,265.32, 840,879 and 379,859.82 is: 524,264.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,265.32 : 840,879 = 379,859.82 : x
  2. Step 2: Convert to fraction form
    609,265.32/840,879 = 379,859.82/x
  3. Step 3: Cross multiply
    609,265.32x = 840,879 × 379,859.82
  4. Step 4: Simplify right side
    609,265.32x = 319,416,145,581.78
  5. Step 5: Solve for x
    x = 319,416,145,581.78/609,265.32
  6. Step 6: Final answer
    x = 524,264.45

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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.