Home / 691,105.60-1,036,658.40-651,739.60

Finding the Fourth Proportional to 691,105.60, 1,036,658.40 and 651,739.60

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Solution

The fourth proportional to 691,105.60, 1,036,658.40 and 651,739.60 is: 977,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,105.60 : 1,036,658.40 = 651,739.60 : x
  2. Step 2: Convert to fraction form
    691,105.60/1,036,658.40 = 651,739.60/x
  3. Step 3: Cross multiply
    691,105.60x = 1,036,658.40 × 651,739.60
  4. Step 4: Simplify right side
    691,105.60x = 675,631,330,952.64
  5. Step 5: Solve for x
    x = 675,631,330,952.64/691,105.60
  6. Step 6: Final answer
    x = 977,609.40

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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.