Home / 728,073.81-1,004,776.08-405,786.15

Finding the Fourth Proportional to 728,073.81, 1,004,776.08 and 405,786.15

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Solution

The fourth proportional to 728,073.81, 1,004,776.08 and 405,786.15 is: 560,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,073.81 : 1,004,776.08 = 405,786.15 : x
  2. Step 2: Convert to fraction form
    728,073.81/1,004,776.08 = 405,786.15/x
  3. Step 3: Cross multiply
    728,073.81x = 1,004,776.08 × 405,786.15
  4. Step 4: Simplify right side
    728,073.81x = 407,724,217,115.29
  5. Step 5: Solve for x
    x = 407,724,217,115.29/728,073.81
  6. Step 6: Final answer
    x = 560,003.96

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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.