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Finding the Fourth Proportional to 880,378.80, 1,320,179.40 and 347,722.80

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Solution

The fourth proportional to 880,378.80, 1,320,179.40 and 347,722.80 is: 521,430.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,378.80 : 1,320,179.40 = 347,722.80 : x
  2. Step 2: Convert to fraction form
    880,378.80/1,320,179.40 = 347,722.80/x
  3. Step 3: Cross multiply
    880,378.80x = 1,320,179.40 × 347,722.80
  4. Step 4: Simplify right side
    880,378.80x = 459,056,477,470.32
  5. Step 5: Solve for x
    x = 459,056,477,470.32/880,378.80
  6. Step 6: Final answer
    x = 521,430.64

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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.