Home / 677,278.30-1,015,972.78-340,145.56

Finding the Fourth Proportional to 677,278.30, 1,015,972.78 and 340,145.56

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Solution

The fourth proportional to 677,278.30, 1,015,972.78 and 340,145.56 is: 510,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,278.30 : 1,015,972.78 = 340,145.56 : x
  2. Step 2: Convert to fraction form
    677,278.30/1,015,972.78 = 340,145.56/x
  3. Step 3: Cross multiply
    677,278.30x = 1,015,972.78 × 340,145.56
  4. Step 4: Simplify right side
    677,278.30x = 345,578,630,197.86
  5. Step 5: Solve for x
    x = 345,578,630,197.86/677,278.30
  6. Step 6: Final answer
    x = 510,246.13

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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.