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Finding the Fourth Proportional to 815,509,057.05, 1,223,263,585.58 and 815,509,057.05

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Solution

The fourth proportional to 815,509,057.05, 1,223,263,585.58 and 815,509,057.05 is: 1,223,263,585.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,509,057.05 : 1,223,263,585.58 = 815,509,057.05 : x
  2. Step 2: Convert to fraction form
    815,509,057.05/1,223,263,585.58 = 815,509,057.05/x
  3. Step 3: Cross multiply
    815,509,057.05x = 1,223,263,585.58 × 815,509,057.05
  4. Step 4: Simplify right side
    815,509,057.05x = 997,582,533,195,870,208
  5. Step 5: Solve for x
    x = 997,582,533,195,870,208/815,509,057.05
  6. Step 6: Final answer
    x = 1,223,263,585.58

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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.