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Finding the Fourth Proportional to 772,889.22, 1,066,649.04 and 428,759.10

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Solution

The fourth proportional to 772,889.22, 1,066,649.04 and 428,759.10 is: 591,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,889.22 : 1,066,649.04 = 428,759.10 : x
  2. Step 2: Convert to fraction form
    772,889.22/1,066,649.04 = 428,759.10/x
  3. Step 3: Cross multiply
    772,889.22x = 1,066,649.04 × 428,759.10
  4. Step 4: Simplify right side
    772,889.22x = 457,335,482,406.26
  5. Step 5: Solve for x
    x = 457,335,482,406.26/772,889.22
  6. Step 6: Final answer
    x = 591,721.91

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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.