Home / 640,949.88-884,412.57-368,965.22

Finding the Fourth Proportional to 640,949.88, 884,412.57 and 368,965.22

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Solution

The fourth proportional to 640,949.88, 884,412.57 and 368,965.22 is: 509,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,949.88 : 884,412.57 = 368,965.22 : x
  2. Step 2: Convert to fraction form
    640,949.88/884,412.57 = 368,965.22/x
  3. Step 3: Cross multiply
    640,949.88x = 884,412.57 × 368,965.22
  4. Step 4: Simplify right side
    640,949.88x = 326,317,474,038.75
  5. Step 5: Solve for x
    x = 326,317,474,038.75/640,949.88
  6. Step 6: Final answer
    x = 509,115.43

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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.