Home / 677,006.20-1,015,217.70-339,916.60

Finding the Fourth Proportional to 677,006.20, 1,015,217.70 and 339,916.60

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Solution

The fourth proportional to 677,006.20, 1,015,217.70 and 339,916.60 is: 509,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,006.20 : 1,015,217.70 = 339,916.60 : x
  2. Step 2: Convert to fraction form
    677,006.20/1,015,217.70 = 339,916.60/x
  3. Step 3: Cross multiply
    677,006.20x = 1,015,217.70 × 339,916.60
  4. Step 4: Simplify right side
    677,006.20x = 345,089,348,843.82
  5. Step 5: Solve for x
    x = 345,089,348,843.82/677,006.20
  6. Step 6: Final answer
    x = 509,728.49

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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.