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Finding the Fourth Proportional to 640,943.73, 882,477.72 and 564,410.88

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Solution

The fourth proportional to 640,943.73, 882,477.72 and 564,410.88 is: 777,104.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,943.73 : 882,477.72 = 564,410.88 : x
  2. Step 2: Convert to fraction form
    640,943.73/882,477.72 = 564,410.88/x
  3. Step 3: Cross multiply
    640,943.73x = 882,477.72 × 564,410.88
  4. Step 4: Simplify right side
    640,943.73x = 498,080,026,525.59
  5. Step 5: Solve for x
    x = 498,080,026,525.59/640,943.73
  6. Step 6: Final answer
    x = 777,104.14

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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.