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Finding the Fourth Proportional to 815,508,008.55, 1,223,262,012.84 and 815,508,008.55

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Solution

The fourth proportional to 815,508,008.55, 1,223,262,012.84 and 815,508,008.55 is: 1,223,262,012.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,508,008.55 : 1,223,262,012.84 = 815,508,008.55 : x
  2. Step 2: Convert to fraction form
    815,508,008.55/1,223,262,012.84 = 815,508,008.55/x
  3. Step 3: Cross multiply
    815,508,008.55x = 1,223,262,012.84 × 815,508,008.55
  4. Step 4: Simplify right side
    815,508,008.55x = 997,579,968,026,012,800
  5. Step 5: Solve for x
    x = 997,579,968,026,012,800/815,508,008.55
  6. Step 6: Final answer
    x = 1,223,262,012.84

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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.