Home / 851,500.03-1,276,778.93-338,645.80

Finding the Fourth Proportional to 851,500.03, 1,276,778.93 and 338,645.80

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Solution

The fourth proportional to 851,500.03, 1,276,778.93 and 338,645.80 is: 507,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,500.03 : 1,276,778.93 = 338,645.80 : x
  2. Step 2: Convert to fraction form
    851,500.03/1,276,778.93 = 338,645.80/x
  3. Step 3: Cross multiply
    851,500.03x = 1,276,778.93 × 338,645.80
  4. Step 4: Simplify right side
    851,500.03x = 432,375,822,172.99
  5. Step 5: Solve for x
    x = 432,375,822,172.99/851,500.03
  6. Step 6: Final answer
    x = 507,781.34

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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.