Home / 728,768.08-1,005,701.32-406,499.04

Finding the Fourth Proportional to 728,768.08, 1,005,701.32 and 406,499.04

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Solution

The fourth proportional to 728,768.08, 1,005,701.32 and 406,499.04 is: 560,969.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,768.08 : 1,005,701.32 = 406,499.04 : x
  2. Step 2: Convert to fraction form
    728,768.08/1,005,701.32 = 406,499.04/x
  3. Step 3: Cross multiply
    728,768.08x = 1,005,701.32 × 406,499.04
  4. Step 4: Simplify right side
    728,768.08x = 408,816,621,106.73
  5. Step 5: Solve for x
    x = 408,816,621,106.73/728,768.08
  6. Step 6: Final answer
    x = 560,969.44

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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.