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Finding the Fourth Proportional to 439,552.60, 659,328.90 and 408,059.80

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Solution

The fourth proportional to 439,552.60, 659,328.90 and 408,059.80 is: 612,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,552.60 : 659,328.90 = 408,059.80 : x
  2. Step 2: Convert to fraction form
    439,552.60/659,328.90 = 408,059.80/x
  3. Step 3: Cross multiply
    439,552.60x = 659,328.90 × 408,059.80
  4. Step 4: Simplify right side
    439,552.60x = 269,045,619,068.22
  5. Step 5: Solve for x
    x = 269,045,619,068.22/439,552.60
  6. Step 6: Final answer
    x = 612,089.70

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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.