Home / 677,276.30-1,015,969.78-340,143.56

Finding the Fourth Proportional to 677,276.30, 1,015,969.78 and 340,143.56

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Solution

The fourth proportional to 677,276.30, 1,015,969.78 and 340,143.56 is: 510,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,276.30 : 1,015,969.78 = 340,143.56 : x
  2. Step 2: Convert to fraction form
    677,276.30/1,015,969.78 = 340,143.56/x
  3. Step 3: Cross multiply
    677,276.30x = 1,015,969.78 × 340,143.56
  4. Step 4: Simplify right side
    677,276.30x = 345,575,577,821.62
  5. Step 5: Solve for x
    x = 345,575,577,821.62/677,276.30
  6. Step 6: Final answer
    x = 510,243.13

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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.