Home / 640,949.37-884,411.88-368,964.72

Finding the Fourth Proportional to 640,949.37, 884,411.88 and 368,964.72

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Solution

The fourth proportional to 640,949.37, 884,411.88 and 368,964.72 is: 509,114.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,949.37 : 884,411.88 = 368,964.72 : x
  2. Step 2: Convert to fraction form
    640,949.37/884,411.88 = 368,964.72/x
  3. Step 3: Cross multiply
    640,949.37x = 884,411.88 × 368,964.72
  4. Step 4: Simplify right side
    640,949.37x = 326,316,781,668.87
  5. Step 5: Solve for x
    x = 326,316,781,668.87/640,949.37
  6. Step 6: Final answer
    x = 509,114.76

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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.