Home / 691,259.40-1,036,889.10-217,992.60

Finding the Fourth Proportional to 691,259.40, 1,036,889.10 and 217,992.60

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Solution

The fourth proportional to 691,259.40, 1,036,889.10 and 217,992.60 is: 326,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,259.40 : 1,036,889.10 = 217,992.60 : x
  2. Step 2: Convert to fraction form
    691,259.40/1,036,889.10 = 217,992.60/x
  3. Step 3: Cross multiply
    691,259.40x = 1,036,889.10 × 217,992.60
  4. Step 4: Simplify right side
    691,259.40x = 226,034,150,820.66
  5. Step 5: Solve for x
    x = 226,034,150,820.66/691,259.40
  6. Step 6: Final answer
    x = 326,988.90

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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.