Home / 786,084,357.57-1,178,505,248.61-392,409,140.15

Finding the Fourth Proportional to 786,084,357.57, 1,178,505,248.61 and 392,409,140.15

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Solution

The fourth proportional to 786,084,357.57, 1,178,505,248.61 and 392,409,140.15 is: 588,303,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,084,357.57 : 1,178,505,248.61 = 392,409,140.15 : x
  2. Step 2: Convert to fraction form
    786,084,357.57/1,178,505,248.61 = 392,409,140.15/x
  3. Step 3: Cross multiply
    786,084,357.57x = 1,178,505,248.61 × 392,409,140.15
  4. Step 4: Simplify right side
    786,084,357.57x = 462,456,231,263,419,520
  5. Step 5: Solve for x
    x = 462,456,231,263,419,520/786,084,357.57
  6. Step 6: Final answer
    x = 588,303,566.67

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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.