Home / 728,628.48-1,005,505.32-406,338.92

Finding the Fourth Proportional to 728,628.48, 1,005,505.32 and 406,338.92

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Solution

The fourth proportional to 728,628.48, 1,005,505.32 and 406,338.92 is: 560,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,628.48 : 1,005,505.32 = 406,338.92 : x
  2. Step 2: Convert to fraction form
    728,628.48/1,005,505.32 = 406,338.92/x
  3. Step 3: Cross multiply
    728,628.48x = 1,005,505.32 × 406,338.92
  4. Step 4: Simplify right side
    728,628.48x = 408,575,945,783.05
  5. Step 5: Solve for x
    x = 408,575,945,783.05/728,628.48
  6. Step 6: Final answer
    x = 560,746.60

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Double scale
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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.