Home / 728,100.23-1,004,783.00-405,830.80

Finding the Fourth Proportional to 728,100.23, 1,004,783.00 and 405,830.80

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Solution

The fourth proportional to 728,100.23, 1,004,783.00 and 405,830.80 is: 560,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,100.23 : 1,004,783.00 = 405,830.80 : x
  2. Step 2: Convert to fraction form
    728,100.23/1,004,783.00 = 405,830.80/x
  3. Step 3: Cross multiply
    728,100.23x = 1,004,783.00 × 405,830.80
  4. Step 4: Simplify right side
    728,100.23x = 407,771,881,663.33
  5. Step 5: Solve for x
    x = 407,771,881,663.33/728,100.23
  6. Step 6: Final answer
    x = 560,049.10

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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.