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Finding the Fourth Proportional to 919,830.32, 1,379,745.87 and 413,800.24

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Solution

The fourth proportional to 919,830.32, 1,379,745.87 and 413,800.24 is: 620,700.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,830.32 : 1,379,745.87 = 413,800.24 : x
  2. Step 2: Convert to fraction form
    919,830.32/1,379,745.87 = 413,800.24/x
  3. Step 3: Cross multiply
    919,830.32x = 1,379,745.87 × 413,800.24
  4. Step 4: Simplify right side
    919,830.32x = 570,939,172,145.01
  5. Step 5: Solve for x
    x = 570,939,172,145.01/919,830.32
  6. Step 6: Final answer
    x = 620,700.54

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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.