Home / 688,101.78-949,573.89-386,293.62

Finding the Fourth Proportional to 688,101.78, 949,573.89 and 386,293.62

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Solution

The fourth proportional to 688,101.78, 949,573.89 and 386,293.62 is: 533,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,101.78 : 949,573.89 = 386,293.62 : x
  2. Step 2: Convert to fraction form
    688,101.78/949,573.89 = 386,293.62/x
  3. Step 3: Cross multiply
    688,101.78x = 949,573.89 × 386,293.62
  4. Step 4: Simplify right side
    688,101.78x = 366,814,335,425.58
  5. Step 5: Solve for x
    x = 366,814,335,425.58/688,101.78
  6. Step 6: Final answer
    x = 533,081.51

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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.