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Finding the Fourth Proportional to 619,625.55, 855,080.90 and 347,692.80

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Solution

The fourth proportional to 619,625.55, 855,080.90 and 347,692.80 is: 479,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,625.55 : 855,080.90 = 347,692.80 : x
  2. Step 2: Convert to fraction form
    619,625.55/855,080.90 = 347,692.80/x
  3. Step 3: Cross multiply
    619,625.55x = 855,080.90 × 347,692.80
  4. Step 4: Simplify right side
    619,625.55x = 297,305,477,075.23
  5. Step 5: Solve for x
    x = 297,305,477,075.23/619,625.55
  6. Step 6: Final answer
    x = 479,814.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.