Home / 672,738,918.80-1,009,108,378.20-491,340,390.80

Finding the Fourth Proportional to 672,738,918.80, 1,009,108,378.20 and 491,340,390.80

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Solution

The fourth proportional to 672,738,918.80, 1,009,108,378.20 and 491,340,390.80 is: 737,010,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,738,918.80 : 1,009,108,378.20 = 491,340,390.80 : x
  2. Step 2: Convert to fraction form
    672,738,918.80/1,009,108,378.20 = 491,340,390.80/x
  3. Step 3: Cross multiply
    672,738,918.80x = 1,009,108,378.20 × 491,340,390.80
  4. Step 4: Simplify right side
    672,738,918.80x = 495,815,704,904,342,208
  5. Step 5: Solve for x
    x = 495,815,704,904,342,208/672,738,918.80
  6. Step 6: Final answer
    x = 737,010,586.20

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Double scale
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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.