Home / 910,080.90-1,365,121.35-278,912.70

Finding the Fourth Proportional to 910,080.90, 1,365,121.35 and 278,912.70

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Solution

The fourth proportional to 910,080.90, 1,365,121.35 and 278,912.70 is: 418,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,080.90 : 1,365,121.35 = 278,912.70 : x
  2. Step 2: Convert to fraction form
    910,080.90/1,365,121.35 = 278,912.70/x
  3. Step 3: Cross multiply
    910,080.90x = 1,365,121.35 × 278,912.70
  4. Step 4: Simplify right side
    910,080.90x = 380,749,681,556.15
  5. Step 5: Solve for x
    x = 380,749,681,556.15/910,080.90
  6. Step 6: Final answer
    x = 418,369.05

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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.