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Finding the Fourth Proportional to 780,004.72, 1,170,183.72 and 247,558

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Solution

The fourth proportional to 780,004.72, 1,170,183.72 and 247,558 is: 371,393.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,004.72 : 1,170,183.72 = 247,558 : x
  2. Step 2: Convert to fraction form
    780,004.72/1,170,183.72 = 247,558/x
  3. Step 3: Cross multiply
    780,004.72x = 1,170,183.72 × 247,558
  4. Step 4: Simplify right side
    780,004.72x = 289,688,341,355.76
  5. Step 5: Solve for x
    x = 289,688,341,355.76/780,004.72
  6. Step 6: Final answer
    x = 371,393.06

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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.