Home / 772,691.61-1,066,378.25-428,638.46

Finding the Fourth Proportional to 772,691.61, 1,066,378.25 and 428,638.46

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Solution

The fourth proportional to 772,691.61, 1,066,378.25 and 428,638.46 is: 591,556.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,691.61 : 1,066,378.25 = 428,638.46 : x
  2. Step 2: Convert to fraction form
    772,691.61/1,066,378.25 = 428,638.46/x
  3. Step 3: Cross multiply
    772,691.61x = 1,066,378.25 × 428,638.46
  4. Step 4: Simplify right side
    772,691.61x = 457,090,728,714.30
  5. Step 5: Solve for x
    x = 457,090,728,714.30/772,691.61
  6. Step 6: Final answer
    x = 591,556.48

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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.