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Finding the Fourth Proportional to 640,070.62, 883,324.29 and 368,138.59

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Solution

The fourth proportional to 640,070.62, 883,324.29 and 368,138.59 is: 508,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,070.62 : 883,324.29 = 368,138.59 : x
  2. Step 2: Convert to fraction form
    640,070.62/883,324.29 = 368,138.59/x
  3. Step 3: Cross multiply
    640,070.62x = 883,324.29 × 368,138.59
  4. Step 4: Simplify right side
    640,070.62x = 325,185,758,633.35
  5. Step 5: Solve for x
    x = 325,185,758,633.35/640,070.62
  6. Step 6: Final answer
    x = 508,046.69

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1.5x scale

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.