Home / 936,921.90-1,405,172.25-430,997.13

Finding the Fourth Proportional to 936,921.90, 1,405,172.25 and 430,997.13

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Solution

The fourth proportional to 936,921.90, 1,405,172.25 and 430,997.13 is: 646,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,921.90 : 1,405,172.25 = 430,997.13 : x
  2. Step 2: Convert to fraction form
    936,921.90/1,405,172.25 = 430,997.13/x
  3. Step 3: Cross multiply
    936,921.90x = 1,405,172.25 × 430,997.13
  4. Step 4: Simplify right side
    936,921.90x = 605,625,206,905.64
  5. Step 5: Solve for x
    x = 605,625,206,905.64/936,921.90
  6. Step 6: Final answer
    x = 646,398.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.