Home / 1,231,636.71-1,699,655.32-687,768.09

Finding the Fourth Proportional to 1,231,636.71, 1,699,655.32 and 687,768.09

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Solution

The fourth proportional to 1,231,636.71, 1,699,655.32 and 687,768.09 is: 949,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,636.71 : 1,699,655.32 = 687,768.09 : x
  2. Step 2: Convert to fraction form
    1,231,636.71/1,699,655.32 = 687,768.09/x
  3. Step 3: Cross multiply
    1,231,636.71x = 1,699,655.32 × 687,768.09
  4. Step 4: Simplify right side
    1,231,636.71x = 1,168,968,693,094.74
  5. Step 5: Solve for x
    x = 1,168,968,693,094.74/1,231,636.71
  6. Step 6: Final answer
    x = 949,118.10

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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.