Home / 772,784.62-1,066,508.51-428,731.41

Finding the Fourth Proportional to 772,784.62, 1,066,508.51 and 428,731.41

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Solution

The fourth proportional to 772,784.62, 1,066,508.51 and 428,731.41 is: 591,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,784.62 : 1,066,508.51 = 428,731.41 : x
  2. Step 2: Convert to fraction form
    772,784.62/1,066,508.51 = 428,731.41/x
  3. Step 3: Cross multiply
    772,784.62x = 1,066,508.51 × 428,731.41
  4. Step 4: Simplify right side
    772,784.62x = 457,245,697,269.30
  5. Step 5: Solve for x
    x = 457,245,697,269.30/772,784.62
  6. Step 6: Final answer
    x = 591,685.81

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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.