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Finding the Fourth Proportional to 493,352.80, 740,029.20 and 419,869.60

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Solution

The fourth proportional to 493,352.80, 740,029.20 and 419,869.60 is: 629,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,352.80 : 740,029.20 = 419,869.60 : x
  2. Step 2: Convert to fraction form
    493,352.80/740,029.20 = 419,869.60/x
  3. Step 3: Cross multiply
    493,352.80x = 740,029.20 × 419,869.60
  4. Step 4: Simplify right side
    493,352.80x = 310,715,764,192.32
  5. Step 5: Solve for x
    x = 310,715,764,192.32/493,352.80
  6. Step 6: Final answer
    x = 629,804.40

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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.