Home / 689,910.30-1,034,865.45-613,802.70

Finding the Fourth Proportional to 689,910.30, 1,034,865.45 and 613,802.70

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Solution

The fourth proportional to 689,910.30, 1,034,865.45 and 613,802.70 is: 920,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,910.30 : 1,034,865.45 = 613,802.70 : x
  2. Step 2: Convert to fraction form
    689,910.30/1,034,865.45 = 613,802.70/x
  3. Step 3: Cross multiply
    689,910.30x = 1,034,865.45 × 613,802.70
  4. Step 4: Simplify right side
    689,910.30x = 635,203,207,346.72
  5. Step 5: Solve for x
    x = 635,203,207,346.72/689,910.30
  6. Step 6: Final answer
    x = 920,704.05

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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.