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Finding the Fourth Proportional to 403,370.80, 605,056.20 and 347,383.60

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Solution

The fourth proportional to 403,370.80, 605,056.20 and 347,383.60 is: 521,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,370.80 : 605,056.20 = 347,383.60 : x
  2. Step 2: Convert to fraction form
    403,370.80/605,056.20 = 347,383.60/x
  3. Step 3: Cross multiply
    403,370.80x = 605,056.20 × 347,383.60
  4. Step 4: Simplify right side
    403,370.80x = 210,186,600,958.32
  5. Step 5: Solve for x
    x = 210,186,600,958.32/403,370.80
  6. Step 6: Final answer
    x = 521,075.40

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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.