Home / 691,257.60-1,036,886.40-644,601.60

Finding the Fourth Proportional to 691,257.60, 1,036,886.40 and 644,601.60

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Solution

The fourth proportional to 691,257.60, 1,036,886.40 and 644,601.60 is: 966,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,257.60 : 1,036,886.40 = 644,601.60 : x
  2. Step 2: Convert to fraction form
    691,257.60/1,036,886.40 = 644,601.60/x
  3. Step 3: Cross multiply
    691,257.60x = 1,036,886.40 × 644,601.60
  4. Step 4: Simplify right side
    691,257.60x = 668,378,632,458.24
  5. Step 5: Solve for x
    x = 668,378,632,458.24/691,257.60
  6. Step 6: Final answer
    x = 966,902.40

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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.