Home / 672,738,139.80-1,009,107,209.70-491,339,611.80

Finding the Fourth Proportional to 672,738,139.80, 1,009,107,209.70 and 491,339,611.80

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Solution

The fourth proportional to 672,738,139.80, 1,009,107,209.70 and 491,339,611.80 is: 737,009,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,738,139.80 : 1,009,107,209.70 = 491,339,611.80 : x
  2. Step 2: Convert to fraction form
    672,738,139.80/1,009,107,209.70 = 491,339,611.80/x
  3. Step 3: Cross multiply
    672,738,139.80x = 1,009,107,209.70 × 491,339,611.80
  4. Step 4: Simplify right side
    672,738,139.80x = 495,814,344,678,579,200
  5. Step 5: Solve for x
    x = 495,814,344,678,579,200/672,738,139.80
  6. Step 6: Final answer
    x = 737,009,417.70

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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.