Home / 728,336.10-1,092,176.10-278,907.60

Finding the Fourth Proportional to 728,336.10, 1,092,176.10 and 278,907.60

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Solution

The fourth proportional to 728,336.10, 1,092,176.10 and 278,907.60 is: 418,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,336.10 : 1,092,176.10 = 278,907.60 : x
  2. Step 2: Convert to fraction form
    728,336.10/1,092,176.10 = 278,907.60/x
  3. Step 3: Cross multiply
    728,336.10x = 1,092,176.10 × 278,907.60
  4. Step 4: Simplify right side
    728,336.10x = 304,616,214,828.36
  5. Step 5: Solve for x
    x = 304,616,214,828.36/728,336.10
  6. Step 6: Final answer
    x = 418,235.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.