Home / 691,100.53-1,036,791.73-391,714.81

Finding the Fourth Proportional to 691,100.53, 1,036,791.73 and 391,714.81

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Solution

The fourth proportional to 691,100.53, 1,036,791.73 and 391,714.81 is: 587,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,100.53 : 1,036,791.73 = 391,714.81 : x
  2. Step 2: Convert to fraction form
    691,100.53/1,036,791.73 = 391,714.81/x
  3. Step 3: Cross multiply
    691,100.53x = 1,036,791.73 × 391,714.81
  4. Step 4: Simplify right side
    691,100.53x = 406,126,673,424.19
  5. Step 5: Solve for x
    x = 406,126,673,424.19/691,100.53
  6. Step 6: Final answer
    x = 587,652.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.