Home / 772,691.92-1,066,380.35-428,638.70

Finding the Fourth Proportional to 772,691.92, 1,066,380.35 and 428,638.70

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Solution

The fourth proportional to 772,691.92, 1,066,380.35 and 428,638.70 is: 591,557.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,691.92 : 1,066,380.35 = 428,638.70 : x
  2. Step 2: Convert to fraction form
    772,691.92/1,066,380.35 = 428,638.70/x
  3. Step 3: Cross multiply
    772,691.92x = 1,066,380.35 × 428,638.70
  4. Step 4: Simplify right side
    772,691.92x = 457,091,884,786.35
  5. Step 5: Solve for x
    x = 457,091,884,786.35/772,691.92
  6. Step 6: Final answer
    x = 591,557.74

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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.