Home / 689,583.40-1,034,375.10-190,947.40

Finding the Fourth Proportional to 689,583.40, 1,034,375.10 and 190,947.40

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Solution

The fourth proportional to 689,583.40, 1,034,375.10 and 190,947.40 is: 286,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,583.40 : 1,034,375.10 = 190,947.40 : x
  2. Step 2: Convert to fraction form
    689,583.40/1,034,375.10 = 190,947.40/x
  3. Step 3: Cross multiply
    689,583.40x = 1,034,375.10 × 190,947.40
  4. Step 4: Simplify right side
    689,583.40x = 197,511,235,969.74
  5. Step 5: Solve for x
    x = 197,511,235,969.74/689,583.40
  6. Step 6: Final answer
    x = 286,421.10

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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.