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Finding the Fourth Proportional to 988,809,656.96, 1,364,558,821.36 and 536,687,786.32

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Solution

The fourth proportional to 988,809,656.96, 1,364,558,821.36 and 536,687,786.32 is: 740,629,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,809,656.96 : 1,364,558,821.36 = 536,687,786.32 : x
  2. Step 2: Convert to fraction form
    988,809,656.96/1,364,558,821.36 = 536,687,786.32/x
  3. Step 3: Cross multiply
    988,809,656.96x = 1,364,558,821.36 × 536,687,786.32
  4. Step 4: Simplify right side
    988,809,656.96x = 732,342,053,139,126,656
  5. Step 5: Solve for x
    x = 732,342,053,139,126,656/988,809,656.96
  6. Step 6: Final answer
    x = 740,629,956.42

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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.