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Finding the Fourth Proportional to 605,297.26, 835,390.20 and 391,060.54

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Solution

The fourth proportional to 605,297.26, 835,390.20 and 391,060.54 is: 539,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,297.26 : 835,390.20 = 391,060.54 : x
  2. Step 2: Convert to fraction form
    605,297.26/835,390.20 = 391,060.54/x
  3. Step 3: Cross multiply
    605,297.26x = 835,390.20 × 391,060.54
  4. Step 4: Simplify right side
    605,297.26x = 326,688,142,722.71
  5. Step 5: Solve for x
    x = 326,688,142,722.71/605,297.26
  6. Step 6: Final answer
    x = 539,715.22

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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.