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Finding the Fourth Proportional to 1,318,592,934.76, 1,819,659,408.42 and 790,263,800.68

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Solution

The fourth proportional to 1,318,592,934.76, 1,819,659,408.42 and 790,263,800.68 is: 1,090,564,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,592,934.76 : 1,819,659,408.42 = 790,263,800.68 : x
  2. Step 2: Convert to fraction form
    1,318,592,934.76/1,819,659,408.42 = 790,263,800.68/x
  3. Step 3: Cross multiply
    1,318,592,934.76x = 1,819,659,408.42 × 790,263,800.68
  4. Step 4: Simplify right side
    1,318,592,934.76x = 1,438,010,960,041,109,504
  5. Step 5: Solve for x
    x = 1,438,010,960,041,109,504/1,318,592,934.76
  6. Step 6: Final answer
    x = 1,090,564,739.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.