Home / 811,286.75-1,214,438.97-510,358.33

Finding the Fourth Proportional to 811,286.75, 1,214,438.97 and 510,358.33

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Solution

The fourth proportional to 811,286.75, 1,214,438.97 and 510,358.33 is: 763,970.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,286.75 : 1,214,438.97 = 510,358.33 : x
  2. Step 2: Convert to fraction form
    811,286.75/1,214,438.97 = 510,358.33/x
  3. Step 3: Cross multiply
    811,286.75x = 1,214,438.97 × 510,358.33
  4. Step 4: Simplify right side
    811,286.75x = 619,799,038,543.93
  5. Step 5: Solve for x
    x = 619,799,038,543.93/811,286.75
  6. Step 6: Final answer
    x = 763,970.37

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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.