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Finding the Fourth Proportional to 547,512.08, 755,558.52 and 305,798.72

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Solution

The fourth proportional to 547,512.08, 755,558.52 and 305,798.72 is: 421,997.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,512.08 : 755,558.52 = 305,798.72 : x
  2. Step 2: Convert to fraction form
    547,512.08/755,558.52 = 305,798.72/x
  3. Step 3: Cross multiply
    547,512.08x = 755,558.52 × 305,798.72
  4. Step 4: Simplify right side
    547,512.08x = 231,048,828,301.09
  5. Step 5: Solve for x
    x = 231,048,828,301.09/547,512.08
  6. Step 6: Final answer
    x = 421,997.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.