Home / 1,099,515,491.30-1,515,907,196.58-712,143,721.38

Finding the Fourth Proportional to 1,099,515,491.30, 1,515,907,196.58 and 712,143,721.38

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Solution

The fourth proportional to 1,099,515,491.30, 1,515,907,196.58 and 712,143,721.38 is: 981,835,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,515,491.30 : 1,515,907,196.58 = 712,143,721.38 : x
  2. Step 2: Convert to fraction form
    1,099,515,491.30/1,515,907,196.58 = 712,143,721.38/x
  3. Step 3: Cross multiply
    1,099,515,491.30x = 1,515,907,196.58 × 712,143,721.38
  4. Step 4: Simplify right side
    1,099,515,491.30x = 1,079,543,792,239,204,352
  5. Step 5: Solve for x
    x = 1,079,543,792,239,204,352/1,099,515,491.30
  6. Step 6: Final answer
    x = 981,835,909.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.