Home / 728,078.40-1,092,117.60-307,828.80

Finding the Fourth Proportional to 728,078.40, 1,092,117.60 and 307,828.80

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Solution

The fourth proportional to 728,078.40, 1,092,117.60 and 307,828.80 is: 461,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,078.40 : 1,092,117.60 = 307,828.80 : x
  2. Step 2: Convert to fraction form
    728,078.40/1,092,117.60 = 307,828.80/x
  3. Step 3: Cross multiply
    728,078.40x = 1,092,117.60 × 307,828.80
  4. Step 4: Simplify right side
    728,078.40x = 336,185,250,266.88
  5. Step 5: Solve for x
    x = 336,185,250,266.88/728,078.40
  6. Step 6: Final answer
    x = 461,743.20

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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.