Home / 764,910,129.60-1,147,365,194.40-489,411,115.20

Finding the Fourth Proportional to 764,910,129.60, 1,147,365,194.40 and 489,411,115.20

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Solution

The fourth proportional to 764,910,129.60, 1,147,365,194.40 and 489,411,115.20 is: 734,116,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,910,129.60 : 1,147,365,194.40 = 489,411,115.20 : x
  2. Step 2: Convert to fraction form
    764,910,129.60/1,147,365,194.40 = 489,411,115.20/x
  3. Step 3: Cross multiply
    764,910,129.60x = 1,147,365,194.40 × 489,411,115.20
  4. Step 4: Simplify right side
    764,910,129.60x = 561,533,279,332,968,832
  5. Step 5: Solve for x
    x = 561,533,279,332,968,832/764,910,129.60
  6. Step 6: Final answer
    x = 734,116,672.80

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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.