Home / 1,263,072.72-1,742,989.14-690,132.72

Finding the Fourth Proportional to 1,263,072.72, 1,742,989.14 and 690,132.72

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Solution

The fourth proportional to 1,263,072.72, 1,742,989.14 and 690,132.72 is: 952,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,072.72 : 1,742,989.14 = 690,132.72 : x
  2. Step 2: Convert to fraction form
    1,263,072.72/1,742,989.14 = 690,132.72/x
  3. Step 3: Cross multiply
    1,263,072.72x = 1,742,989.14 × 690,132.72
  4. Step 4: Simplify right side
    1,263,072.72x = 1,202,893,836,118.66
  5. Step 5: Solve for x
    x = 1,202,893,836,118.66/1,263,072.72
  6. Step 6: Final answer
    x = 952,355.17

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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.