Home / 731,760.36-1,009,796.32-405,085.60

Finding the Fourth Proportional to 731,760.36, 1,009,796.32 and 405,085.60

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Solution

The fourth proportional to 731,760.36, 1,009,796.32 and 405,085.60 is: 558,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,760.36 : 1,009,796.32 = 405,085.60 : x
  2. Step 2: Convert to fraction form
    731,760.36/1,009,796.32 = 405,085.60/x
  3. Step 3: Cross multiply
    731,760.36x = 1,009,796.32 × 405,085.60
  4. Step 4: Simplify right side
    731,760.36x = 409,053,948,164.99
  5. Step 5: Solve for x
    x = 409,053,948,164.99/731,760.36
  6. Step 6: Final answer
    x = 558,999.87

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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.