Home / 678,621,286.80-1,018,230,528.60-314,928,435.60

Finding the Fourth Proportional to 678,621,286.80, 1,018,230,528.60 and 314,928,435.60

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Solution

The fourth proportional to 678,621,286.80, 1,018,230,528.60 and 314,928,435.60 is: 472,531,224.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,621,286.80 : 1,018,230,528.60 = 314,928,435.60 : x
  2. Step 2: Convert to fraction form
    678,621,286.80/1,018,230,528.60 = 314,928,435.60/x
  3. Step 3: Cross multiply
    678,621,286.80x = 1,018,230,528.60 × 314,928,435.60
  4. Step 4: Simplify right side
    678,621,286.80x = 320,669,747,452,159,104
  5. Step 5: Solve for x
    x = 320,669,747,452,159,104/678,621,286.80
  6. Step 6: Final answer
    x = 472,531,224.25

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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.