Home / 729,809.66-1,007,139.52-407,531.52

Finding the Fourth Proportional to 729,809.66, 1,007,139.52 and 407,531.52

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Solution

The fourth proportional to 729,809.66, 1,007,139.52 and 407,531.52 is: 562,394.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,809.66 : 1,007,139.52 = 407,531.52 : x
  2. Step 2: Convert to fraction form
    729,809.66/1,007,139.52 = 407,531.52/x
  3. Step 3: Cross multiply
    729,809.66x = 1,007,139.52 × 407,531.52
  4. Step 4: Simplify right side
    729,809.66x = 410,441,099,947.09
  5. Step 5: Solve for x
    x = 410,441,099,947.09/729,809.66
  6. Step 6: Final answer
    x = 562,394.72

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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.