Home / 686,761.84-1,030,290.40-231,398.34

Finding the Fourth Proportional to 686,761.84, 1,030,290.40 and 231,398.34

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Solution

The fourth proportional to 686,761.84, 1,030,290.40 and 231,398.34 is: 347,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,761.84 : 1,030,290.40 = 231,398.34 : x
  2. Step 2: Convert to fraction form
    686,761.84/1,030,290.40 = 231,398.34/x
  3. Step 3: Cross multiply
    686,761.84x = 1,030,290.40 × 231,398.34
  4. Step 4: Simplify right side
    686,761.84x = 238,407,484,703.60
  5. Step 5: Solve for x
    x = 238,407,484,703.60/686,761.84
  6. Step 6: Final answer
    x = 347,147.25

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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.