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Finding the Fourth Proportional to 566,659.56, 781,991.04 and 312,011.48

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Solution

The fourth proportional to 566,659.56, 781,991.04 and 312,011.48 is: 430,576.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,659.56 : 781,991.04 = 312,011.48 : x
  2. Step 2: Convert to fraction form
    566,659.56/781,991.04 = 312,011.48/x
  3. Step 3: Cross multiply
    566,659.56x = 781,991.04 × 312,011.48
  4. Step 4: Simplify right side
    566,659.56x = 243,990,181,737.14
  5. Step 5: Solve for x
    x = 243,990,181,737.14/566,659.56
  6. Step 6: Final answer
    x = 430,576.31

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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.