Home / 419,001,142.95-628,501,721.72-127,869,758.73

Finding the Fourth Proportional to 419,001,142.95, 628,501,721.72 and 127,869,758.73

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Solution

The fourth proportional to 419,001,142.95, 628,501,721.72 and 127,869,758.73 is: 191,804,640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,001,142.95 : 628,501,721.72 = 127,869,758.73 : x
  2. Step 2: Convert to fraction form
    419,001,142.95/628,501,721.72 = 127,869,758.73/x
  3. Step 3: Cross multiply
    419,001,142.95x = 628,501,721.72 × 127,869,758.73
  4. Step 4: Simplify right side
    419,001,142.95x = 80,366,363,517,086,656
  5. Step 5: Solve for x
    x = 80,366,363,517,086,656/419,001,142.95
  6. Step 6: Final answer
    x = 191,804,640.32

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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.