Home / 728,698.75-1,005,606.06-406,429.72

Finding the Fourth Proportional to 728,698.75, 1,005,606.06 and 406,429.72

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Solution

The fourth proportional to 728,698.75, 1,005,606.06 and 406,429.72 is: 560,874.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,698.75 : 1,005,606.06 = 406,429.72 : x
  2. Step 2: Convert to fraction form
    728,698.75/1,005,606.06 = 406,429.72/x
  3. Step 3: Cross multiply
    728,698.75x = 1,005,606.06 × 406,429.72
  4. Step 4: Simplify right side
    728,698.75x = 408,708,185,357.98
  5. Step 5: Solve for x
    x = 408,708,185,357.98/728,698.75
  6. Step 6: Final answer
    x = 560,874.01

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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.