Home / 772,691.17-1,066,377.64-428,638.02

Finding the Fourth Proportional to 772,691.17, 1,066,377.64 and 428,638.02

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Solution

The fourth proportional to 772,691.17, 1,066,377.64 and 428,638.02 is: 591,555.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,691.17 : 1,066,377.64 = 428,638.02 : x
  2. Step 2: Convert to fraction form
    772,691.17/1,066,377.64 = 428,638.02/x
  3. Step 3: Cross multiply
    772,691.17x = 1,066,377.64 × 428,638.02
  4. Step 4: Simplify right side
    772,691.17x = 457,090,001,521.37
  5. Step 5: Solve for x
    x = 457,090,001,521.37/772,691.17
  6. Step 6: Final answer
    x = 591,555.88

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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.