Home / 728,766.09-1,005,698.58-406,497.06

Finding the Fourth Proportional to 728,766.09, 1,005,698.58 and 406,497.06

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Solution

The fourth proportional to 728,766.09, 1,005,698.58 and 406,497.06 is: 560,966.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,766.09 : 1,005,698.58 = 406,497.06 : x
  2. Step 2: Convert to fraction form
    728,766.09/1,005,698.58 = 406,497.06/x
  3. Step 3: Cross multiply
    728,766.09x = 1,005,698.58 × 406,497.06
  4. Step 4: Simplify right side
    728,766.09x = 408,813,516,016.18
  5. Step 5: Solve for x
    x = 408,813,516,016.18/728,766.09
  6. Step 6: Final answer
    x = 560,966.71

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1.5x scale

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.