Home / 686,385.82-1,028,966.37-349,237.90

Finding the Fourth Proportional to 686,385.82, 1,028,966.37 and 349,237.90

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Solution

The fourth proportional to 686,385.82, 1,028,966.37 and 349,237.90 is: 523,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,385.82 : 1,028,966.37 = 349,237.90 : x
  2. Step 2: Convert to fraction form
    686,385.82/1,028,966.37 = 349,237.90/x
  3. Step 3: Cross multiply
    686,385.82x = 1,028,966.37 × 349,237.90
  4. Step 4: Simplify right side
    686,385.82x = 359,354,054,229.42
  5. Step 5: Solve for x
    x = 359,354,054,229.42/686,385.82
  6. Step 6: Final answer
    x = 523,545.28

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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.