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Finding the Fourth Proportional to 815,508,712.05, 1,223,263,068.08 and 815,508,712.05

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Solution

The fourth proportional to 815,508,712.05, 1,223,263,068.08 and 815,508,712.05 is: 1,223,263,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,508,712.05 : 1,223,263,068.08 = 815,508,712.05 : x
  2. Step 2: Convert to fraction form
    815,508,712.05/1,223,263,068.08 = 815,508,712.05/x
  3. Step 3: Cross multiply
    815,508,712.05x = 1,223,263,068.08 × 815,508,712.05
  4. Step 4: Simplify right side
    815,508,712.05x = 997,581,689,144,174,720
  5. Step 5: Solve for x
    x = 997,581,689,144,174,720/815,508,712.05
  6. Step 6: Final answer
    x = 1,223,263,068.08

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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.