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Finding the Fourth Proportional to 1,011,699,039.56, 1,395,374,375.22 and 870,810,050.12

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Solution

The fourth proportional to 1,011,699,039.56, 1,395,374,375.22 and 870,810,050.12 is: 1,201,054,841.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,699,039.56 : 1,395,374,375.22 = 870,810,050.12 : x
  2. Step 2: Convert to fraction form
    1,011,699,039.56/1,395,374,375.22 = 870,810,050.12/x
  3. Step 3: Cross multiply
    1,011,699,039.56x = 1,395,374,375.22 × 870,810,050.12
  4. Step 4: Simplify right side
    1,011,699,039.56x = 1,215,106,029,621,491,968
  5. Step 5: Solve for x
    x = 1,215,106,029,621,491,968/1,011,699,039.56
  6. Step 6: Final answer
    x = 1,201,054,841.52

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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.