Home / 724,284.81-999,505.49-401,997.69

Finding the Fourth Proportional to 724,284.81, 999,505.49 and 401,997.69

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Solution

The fourth proportional to 724,284.81, 999,505.49 and 401,997.69 is: 554,752.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,284.81 : 999,505.49 = 401,997.69 : x
  2. Step 2: Convert to fraction form
    724,284.81/999,505.49 = 401,997.69/x
  3. Step 3: Cross multiply
    724,284.81x = 999,505.49 × 401,997.69
  4. Step 4: Simplify right side
    724,284.81x = 401,798,896,112.33
  5. Step 5: Solve for x
    x = 401,798,896,112.33/724,284.81
  6. Step 6: Final answer
    x = 554,752.62

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Double scale
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Similar ratio
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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.