Home / 772,818.22-1,066,489.50-428,642.20

Finding the Fourth Proportional to 772,818.22, 1,066,489.50 and 428,642.20

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Solution

The fourth proportional to 772,818.22, 1,066,489.50 and 428,642.20 is: 591,526.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,818.22 : 1,066,489.50 = 428,642.20 : x
  2. Step 2: Convert to fraction form
    772,818.22/1,066,489.50 = 428,642.20/x
  3. Step 3: Cross multiply
    772,818.22x = 1,066,489.50 × 428,642.20
  4. Step 4: Simplify right side
    772,818.22x = 457,142,405,556.90
  5. Step 5: Solve for x
    x = 457,142,405,556.90/772,818.22
  6. Step 6: Final answer
    x = 591,526.43

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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.