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Finding the Fourth Proportional to 686,471.36, 947,707.56 and 469,007.01

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Solution

The fourth proportional to 686,471.36, 947,707.56 and 469,007.01 is: 647,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,471.36 : 947,707.56 = 469,007.01 : x
  2. Step 2: Convert to fraction form
    686,471.36/947,707.56 = 469,007.01/x
  3. Step 3: Cross multiply
    686,471.36x = 947,707.56 × 469,007.01
  4. Step 4: Simplify right side
    686,471.36x = 444,481,489,070.00
  5. Step 5: Solve for x
    x = 444,481,489,070.00/686,471.36
  6. Step 6: Final answer
    x = 647,487.31

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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.