Home / 764,902,003.60-1,147,353,005.40-489,402,989.20

Finding the Fourth Proportional to 764,902,003.60, 1,147,353,005.40 and 489,402,989.20

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Solution

The fourth proportional to 764,902,003.60, 1,147,353,005.40 and 489,402,989.20 is: 734,104,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,902,003.60 : 1,147,353,005.40 = 489,402,989.20 : x
  2. Step 2: Convert to fraction form
    764,902,003.60/1,147,353,005.40 = 489,402,989.20/x
  3. Step 3: Cross multiply
    764,902,003.60x = 1,147,353,005.40 × 489,402,989.20
  4. Step 4: Simplify right side
    764,902,003.60x = 561,517,990,510,363,776
  5. Step 5: Solve for x
    x = 561,517,990,510,363,776/764,902,003.60
  6. Step 6: Final answer
    x = 734,104,483.80

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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.