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Finding the Fourth Proportional to 880,396.80, 1,320,206.40 and 347,740.80

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Solution

The fourth proportional to 880,396.80, 1,320,206.40 and 347,740.80 is: 521,457.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,396.80 : 1,320,206.40 = 347,740.80 : x
  2. Step 2: Convert to fraction form
    880,396.80/1,320,206.40 = 347,740.80/x
  3. Step 3: Cross multiply
    880,396.80x = 1,320,206.40 × 347,740.80
  4. Step 4: Simplify right side
    880,396.80x = 459,089,629,701.12
  5. Step 5: Solve for x
    x = 459,089,629,701.12/880,396.80
  6. Step 6: Final answer
    x = 521,457.63

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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.