Home / 640,933.88-884,221.49-368,936.69

Finding the Fourth Proportional to 640,933.88, 884,221.49 and 368,936.69

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Solution

The fourth proportional to 640,933.88, 884,221.49 and 368,936.69 is: 508,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,933.88 : 884,221.49 = 368,936.69 : x
  2. Step 2: Convert to fraction form
    640,933.88/884,221.49 = 368,936.69/x
  3. Step 3: Cross multiply
    640,933.88x = 884,221.49 × 368,936.69
  4. Step 4: Simplify right side
    640,933.88x = 326,221,746,248.70
  5. Step 5: Solve for x
    x = 326,221,746,248.70/640,933.88
  6. Step 6: Final answer
    x = 508,978.79

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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.