Home / 638,821.80-958,232.70-470,860.20

Finding the Fourth Proportional to 638,821.80, 958,232.70 and 470,860.20

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Solution

The fourth proportional to 638,821.80, 958,232.70 and 470,860.20 is: 706,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,821.80 : 958,232.70 = 470,860.20 : x
  2. Step 2: Convert to fraction form
    638,821.80/958,232.70 = 470,860.20/x
  3. Step 3: Cross multiply
    638,821.80x = 958,232.70 × 470,860.20
  4. Step 4: Simplify right side
    638,821.80x = 451,193,640,768.54
  5. Step 5: Solve for x
    x = 451,193,640,768.54/638,821.80
  6. Step 6: Final answer
    x = 706,290.30

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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.