Home / 728,336.72-1,005,106.03-406,040.35

Finding the Fourth Proportional to 728,336.72, 1,005,106.03 and 406,040.35

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Solution

The fourth proportional to 728,336.72, 1,005,106.03 and 406,040.35 is: 560,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,336.72 : 1,005,106.03 = 406,040.35 : x
  2. Step 2: Convert to fraction form
    728,336.72/1,005,106.03 = 406,040.35/x
  3. Step 3: Cross multiply
    728,336.72x = 1,005,106.03 × 406,040.35
  4. Step 4: Simplify right side
    728,336.72x = 408,113,600,680.45
  5. Step 5: Solve for x
    x = 408,113,600,680.45/728,336.72
  6. Step 6: Final answer
    x = 560,336.44

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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.