Home / 764,902,005.10-1,147,353,007.65-489,402,990.70

Finding the Fourth Proportional to 764,902,005.10, 1,147,353,007.65 and 489,402,990.70

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Solution

The fourth proportional to 764,902,005.10, 1,147,353,007.65 and 489,402,990.70 is: 734,104,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,902,005.10 : 1,147,353,007.65 = 489,402,990.70 : x
  2. Step 2: Convert to fraction form
    764,902,005.10/1,147,353,007.65 = 489,402,990.70/x
  3. Step 3: Cross multiply
    764,902,005.10x = 1,147,353,007.65 × 489,402,990.70
  4. Step 4: Simplify right side
    764,902,005.10x = 561,517,993,332,550,016
  5. Step 5: Solve for x
    x = 561,517,993,332,550,016/764,902,005.10
  6. Step 6: Final answer
    x = 734,104,486.05

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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.