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Finding the Fourth Proportional to 578,019.09, 797,649.93 and 319,906.61

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Solution

The fourth proportional to 578,019.09, 797,649.93 and 319,906.61 is: 441,462.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,019.09 : 797,649.93 = 319,906.61 : x
  2. Step 2: Convert to fraction form
    578,019.09/797,649.93 = 319,906.61/x
  3. Step 3: Cross multiply
    578,019.09x = 797,649.93 × 319,906.61
  4. Step 4: Simplify right side
    578,019.09x = 255,173,488,562.76
  5. Step 5: Solve for x
    x = 255,173,488,562.76/578,019.09
  6. Step 6: Final answer
    x = 441,462.04

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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.