Home / 728,783.46-1,005,718.55-406,493.30

Finding the Fourth Proportional to 728,783.46, 1,005,718.55 and 406,493.30

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Solution

The fourth proportional to 728,783.46, 1,005,718.55 and 406,493.30 is: 560,959.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,783.46 : 1,005,718.55 = 406,493.30 : x
  2. Step 2: Convert to fraction form
    728,783.46/1,005,718.55 = 406,493.30/x
  3. Step 3: Cross multiply
    728,783.46x = 1,005,718.55 × 406,493.30
  4. Step 4: Simplify right side
    728,783.46x = 408,817,852,742.55
  5. Step 5: Solve for x
    x = 408,817,852,742.55/728,783.46
  6. Step 6: Final answer
    x = 560,959.29

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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.