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Finding the Fourth Proportional to 469,553.96, 647,995.56 and 285,729.32

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Solution

The fourth proportional to 469,553.96, 647,995.56 and 285,729.32 is: 394,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,553.96 : 647,995.56 = 285,729.32 : x
  2. Step 2: Convert to fraction form
    469,553.96/647,995.56 = 285,729.32/x
  3. Step 3: Cross multiply
    469,553.96x = 647,995.56 × 285,729.32
  4. Step 4: Simplify right side
    469,553.96x = 185,151,330,721.82
  5. Step 5: Solve for x
    x = 185,151,330,721.82/469,553.96
  6. Step 6: Final answer
    x = 394,313.21

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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.