Home / 1,123,521.47-1,550,554.09-687,936.68

Finding the Fourth Proportional to 1,123,521.47, 1,550,554.09 and 687,936.68

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Solution

The fourth proportional to 1,123,521.47, 1,550,554.09 and 687,936.68 is: 949,410.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,521.47 : 1,550,554.09 = 687,936.68 : x
  2. Step 2: Convert to fraction form
    1,123,521.47/1,550,554.09 = 687,936.68/x
  3. Step 3: Cross multiply
    1,123,521.47x = 1,550,554.09 × 687,936.68
  4. Step 4: Simplify right side
    1,123,521.47x = 1,066,683,029,176.99
  5. Step 5: Solve for x
    x = 1,066,683,029,176.99/1,123,521.47
  6. Step 6: Final answer
    x = 949,410.46

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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.