Home / 689,268.60-1,031,570.10-605,287.80

Finding the Fourth Proportional to 689,268.60, 1,031,570.10 and 605,287.80

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Solution

The fourth proportional to 689,268.60, 1,031,570.10 and 605,287.80 is: 905,883.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,268.60 : 1,031,570.10 = 605,287.80 : x
  2. Step 2: Convert to fraction form
    689,268.60/1,031,570.10 = 605,287.80/x
  3. Step 3: Cross multiply
    689,268.60x = 1,031,570.10 × 605,287.80
  4. Step 4: Simplify right side
    689,268.60x = 624,396,796,374.78
  5. Step 5: Solve for x
    x = 624,396,796,374.78/689,268.60
  6. Step 6: Final answer
    x = 905,883.13

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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.