Home / 772,621.92-1,066,164.48-428,475.68

Finding the Fourth Proportional to 772,621.92, 1,066,164.48 and 428,475.68

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Solution

The fourth proportional to 772,621.92, 1,066,164.48 and 428,475.68 is: 591,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,621.92 : 1,066,164.48 = 428,475.68 : x
  2. Step 2: Convert to fraction form
    772,621.92/1,066,164.48 = 428,475.68/x
  3. Step 3: Cross multiply
    772,621.92x = 1,066,164.48 × 428,475.68
  4. Step 4: Simplify right side
    772,621.92x = 456,825,550,559.85
  5. Step 5: Solve for x
    x = 456,825,550,559.85/772,621.92
  6. Step 6: Final answer
    x = 591,266.62

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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.