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Finding the Fourth Proportional to 566,887.72, 782,305 and 312,238.91

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Solution

The fourth proportional to 566,887.72, 782,305 and 312,238.91 is: 430,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,887.72 : 782,305 = 312,238.91 : x
  2. Step 2: Convert to fraction form
    566,887.72/782,305 = 312,238.91/x
  3. Step 3: Cross multiply
    566,887.72x = 782,305 × 312,238.91
  4. Step 4: Simplify right side
    566,887.72x = 244,266,060,487.55
  5. Step 5: Solve for x
    x = 244,266,060,487.55/566,887.72
  6. Step 6: Final answer
    x = 430,889.67

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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.