Home / 1,123,967.79-1,550,721.44-687,930.57

Finding the Fourth Proportional to 1,123,967.79, 1,550,721.44 and 687,930.57

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Solution

The fourth proportional to 1,123,967.79, 1,550,721.44 and 687,930.57 is: 949,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,967.79 : 1,550,721.44 = 687,930.57 : x
  2. Step 2: Convert to fraction form
    1,123,967.79/1,550,721.44 = 687,930.57/x
  3. Step 3: Cross multiply
    1,123,967.79x = 1,550,721.44 × 687,930.57
  4. Step 4: Simplify right side
    1,123,967.79x = 1,066,788,684,130.42
  5. Step 5: Solve for x
    x = 1,066,788,684,130.42/1,123,967.79
  6. Step 6: Final answer
    x = 949,127.45

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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.