Home / 908,419.12-1,362,839.60-309,385.47

Finding the Fourth Proportional to 908,419.12, 1,362,839.60 and 309,385.47

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Solution

The fourth proportional to 908,419.12, 1,362,839.60 and 309,385.47 is: 464,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,419.12 : 1,362,839.60 = 309,385.47 : x
  2. Step 2: Convert to fraction form
    908,419.12/1,362,839.60 = 309,385.47/x
  3. Step 3: Cross multiply
    908,419.12x = 1,362,839.60 × 309,385.47
  4. Step 4: Simplify right side
    908,419.12x = 421,642,764,139.88
  5. Step 5: Solve for x
    x = 421,642,764,139.88/908,419.12
  6. Step 6: Final answer
    x = 464,150.03

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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.