Home / 678,377,709.40-1,017,566,564.10-269,433,859.90

Finding the Fourth Proportional to 678,377,709.40, 1,017,566,564.10 and 269,433,859.90

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Solution

The fourth proportional to 678,377,709.40, 1,017,566,564.10 and 269,433,859.90 is: 404,150,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,377,709.40 : 1,017,566,564.10 = 269,433,859.90 : x
  2. Step 2: Convert to fraction form
    678,377,709.40/1,017,566,564.10 = 269,433,859.90/x
  3. Step 3: Cross multiply
    678,377,709.40x = 1,017,566,564.10 × 269,433,859.90
  4. Step 4: Simplify right side
    678,377,709.40x = 274,166,887,070,643,744
  5. Step 5: Solve for x
    x = 274,166,887,070,643,744/678,377,709.40
  6. Step 6: Final answer
    x = 404,150,789.85

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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.