Home / 768,018.96-1,151,169.98-287,784.81

Finding the Fourth Proportional to 768,018.96, 1,151,169.98 and 287,784.81

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Solution

The fourth proportional to 768,018.96, 1,151,169.98 and 287,784.81 is: 431,355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,018.96 : 1,151,169.98 = 287,784.81 : x
  2. Step 2: Convert to fraction form
    768,018.96/1,151,169.98 = 287,784.81/x
  3. Step 3: Cross multiply
    768,018.96x = 1,151,169.98 × 287,784.81
  4. Step 4: Simplify right side
    768,018.96x = 331,289,232,533.08
  5. Step 5: Solve for x
    x = 331,289,232,533.08/768,018.96
  6. Step 6: Final answer
    x = 431,355.54

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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.