Home / 919,620.90-1,379,415.24-413,823.90

Finding the Fourth Proportional to 919,620.90, 1,379,415.24 and 413,823.90

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Solution

The fourth proportional to 919,620.90, 1,379,415.24 and 413,823.90 is: 620,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,620.90 : 1,379,415.24 = 413,823.90 : x
  2. Step 2: Convert to fraction form
    919,620.90/1,379,415.24 = 413,823.90/x
  3. Step 3: Cross multiply
    919,620.90x = 1,379,415.24 × 413,823.90
  4. Step 4: Simplify right side
    919,620.90x = 570,834,994,336.24
  5. Step 5: Solve for x
    x = 570,834,994,336.24/919,620.90
  6. Step 6: Final answer
    x = 620,728.60

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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.