Home / 729,218.45-1,006,321.65-402,531.66

Finding the Fourth Proportional to 729,218.45, 1,006,321.65 and 402,531.66

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Solution

The fourth proportional to 729,218.45, 1,006,321.65 and 402,531.66 is: 555,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,218.45 : 1,006,321.65 = 402,531.66 : x
  2. Step 2: Convert to fraction form
    729,218.45/1,006,321.65 = 402,531.66/x
  3. Step 3: Cross multiply
    729,218.45x = 1,006,321.65 × 402,531.66
  4. Step 4: Simplify right side
    729,218.45x = 405,076,319,236.83
  5. Step 5: Solve for x
    x = 405,076,319,236.83/729,218.45
  6. Step 6: Final answer
    x = 555,493.79

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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.