Home / 767,722.29-1,059,456.87-428,190.54

Finding the Fourth Proportional to 767,722.29, 1,059,456.87 and 428,190.54

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Solution

The fourth proportional to 767,722.29, 1,059,456.87 and 428,190.54 is: 590,903.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,722.29 : 1,059,456.87 = 428,190.54 : x
  2. Step 2: Convert to fraction form
    767,722.29/1,059,456.87 = 428,190.54/x
  3. Step 3: Cross multiply
    767,722.29x = 1,059,456.87 × 428,190.54
  4. Step 4: Simplify right side
    767,722.29x = 453,649,409,272.01
  5. Step 5: Solve for x
    x = 453,649,409,272.01/767,722.29
  6. Step 6: Final answer
    x = 590,903.01

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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.