Home / 783,640,010.40-1,175,584,431.60-266,119,216.80

Finding the Fourth Proportional to 783,640,010.40, 1,175,584,431.60 and 266,119,216.80

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Solution

The fourth proportional to 783,640,010.40, 1,175,584,431.60 and 266,119,216.80 is: 399,221,076.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,640,010.40 : 1,175,584,431.60 = 266,119,216.80 : x
  2. Step 2: Convert to fraction form
    783,640,010.40/1,175,584,431.60 = 266,119,216.80/x
  3. Step 3: Cross multiply
    783,640,010.40x = 1,175,584,431.60 × 266,119,216.80
  4. Step 4: Simplify right side
    783,640,010.40x = 312,845,608,219,665,152
  5. Step 5: Solve for x
    x = 312,845,608,219,665,152/783,640,010.40
  6. Step 6: Final answer
    x = 399,221,076.09

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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.