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Finding the Fourth Proportional to 640,953.64, 884,417.76 and 368,968.96

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Solution

The fourth proportional to 640,953.64, 884,417.76 and 368,968.96 is: 509,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,953.64 : 884,417.76 = 368,968.96 : x
  2. Step 2: Convert to fraction form
    640,953.64/884,417.76 = 368,968.96/x
  3. Step 3: Cross multiply
    640,953.64x = 884,417.76 × 368,968.96
  4. Step 4: Simplify right side
    640,953.64x = 326,322,701,112.73
  5. Step 5: Solve for x
    x = 326,322,701,112.73/640,953.64
  6. Step 6: Final answer
    x = 509,120.60

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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.