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Finding the Fourth Proportional to 640,272.66, 883,742.30 and 368,368.41

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Solution

The fourth proportional to 640,272.66, 883,742.30 and 368,368.41 is: 508,443.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,272.66 : 883,742.30 = 368,368.41 : x
  2. Step 2: Convert to fraction form
    640,272.66/883,742.30 = 368,368.41/x
  3. Step 3: Cross multiply
    640,272.66x = 883,742.30 × 368,368.41
  4. Step 4: Simplify right side
    640,272.66x = 325,542,744,058.90
  5. Step 5: Solve for x
    x = 325,542,744,058.90/640,272.66
  6. Step 6: Final answer
    x = 508,443.92

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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.