Home / 677,005.20-1,015,216.20-339,915.60

Finding the Fourth Proportional to 677,005.20, 1,015,216.20 and 339,915.60

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Solution

The fourth proportional to 677,005.20, 1,015,216.20 and 339,915.60 is: 509,726.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,005.20 : 1,015,216.20 = 339,915.60 : x
  2. Step 2: Convert to fraction form
    677,005.20/1,015,216.20 = 339,915.60/x
  3. Step 3: Cross multiply
    677,005.20x = 1,015,216.20 × 339,915.60
  4. Step 4: Simplify right side
    677,005.20x = 345,087,823,752.72
  5. Step 5: Solve for x
    x = 345,087,823,752.72/677,005.20
  6. Step 6: Final answer
    x = 509,726.99

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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.