Home / 689,949.72-1,034,769.06-191,352.60

Finding the Fourth Proportional to 689,949.72, 1,034,769.06 and 191,352.60

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Solution

The fourth proportional to 689,949.72, 1,034,769.06 and 191,352.60 is: 286,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,949.72 : 1,034,769.06 = 191,352.60 : x
  2. Step 2: Convert to fraction form
    689,949.72/1,034,769.06 = 191,352.60/x
  3. Step 3: Cross multiply
    689,949.72x = 1,034,769.06 × 191,352.60
  4. Step 4: Simplify right side
    689,949.72x = 198,005,750,030.56
  5. Step 5: Solve for x
    x = 198,005,750,030.56/689,949.72
  6. Step 6: Final answer
    x = 286,985.77

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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.