Home / 689,664.80-1,034,497.20-191,028.80

Finding the Fourth Proportional to 689,664.80, 1,034,497.20 and 191,028.80

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Solution

The fourth proportional to 689,664.80, 1,034,497.20 and 191,028.80 is: 286,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,664.80 : 1,034,497.20 = 191,028.80 : x
  2. Step 2: Convert to fraction form
    689,664.80/1,034,497.20 = 191,028.80/x
  3. Step 3: Cross multiply
    689,664.80x = 1,034,497.20 × 191,028.80
  4. Step 4: Simplify right side
    689,664.80x = 197,618,758,719.36
  5. Step 5: Solve for x
    x = 197,618,758,719.36/689,664.80
  6. Step 6: Final answer
    x = 286,543.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.