Home / 489,618,059.40-734,427,089.10-378,653,178.60

Finding the Fourth Proportional to 489,618,059.40, 734,427,089.10 and 378,653,178.60

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Solution

The fourth proportional to 489,618,059.40, 734,427,089.10 and 378,653,178.60 is: 567,979,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,618,059.40 : 734,427,089.10 = 378,653,178.60 : x
  2. Step 2: Convert to fraction form
    489,618,059.40/734,427,089.10 = 378,653,178.60/x
  3. Step 3: Cross multiply
    489,618,059.40x = 734,427,089.10 × 378,653,178.60
  4. Step 4: Simplify right side
    489,618,059.40x = 278,093,151,737,660,448
  5. Step 5: Solve for x
    x = 278,093,151,737,660,448/489,618,059.40
  6. Step 6: Final answer
    x = 567,979,767.90

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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.