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Finding the Fourth Proportional to 664,008,413.70, 996,012,620.55 and 654,938,487.30

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Solution

The fourth proportional to 664,008,413.70, 996,012,620.55 and 654,938,487.30 is: 982,407,730.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,008,413.70 : 996,012,620.55 = 654,938,487.30 : x
  2. Step 2: Convert to fraction form
    664,008,413.70/996,012,620.55 = 654,938,487.30/x
  3. Step 3: Cross multiply
    664,008,413.70x = 996,012,620.55 × 654,938,487.30
  4. Step 4: Simplify right side
    664,008,413.70x = 652,326,999,034,725,760
  5. Step 5: Solve for x
    x = 652,326,999,034,725,760/664,008,413.70
  6. Step 6: Final answer
    x = 982,407,730.95

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Double scale
Find fourth proportional to 664,008,414.70, 996,012,622.05 and 654,938,488.30
Similar ratio
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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.