Home / 768,928.76-1,153,388.94-313,518.21

Finding the Fourth Proportional to 768,928.76, 1,153,388.94 and 313,518.21

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Solution

The fourth proportional to 768,928.76, 1,153,388.94 and 313,518.21 is: 470,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,928.76 : 1,153,388.94 = 313,518.21 : x
  2. Step 2: Convert to fraction form
    768,928.76/1,153,388.94 = 313,518.21/x
  3. Step 3: Cross multiply
    768,928.76x = 1,153,388.94 × 313,518.21
  4. Step 4: Simplify right side
    768,928.76x = 361,608,436,290.91
  5. Step 5: Solve for x
    x = 361,608,436,290.91/768,928.76
  6. Step 6: Final answer
    x = 470,275.60

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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.