Home / 738,400.20-1,107,600.30-419,535.60

Finding the Fourth Proportional to 738,400.20, 1,107,600.30 and 419,535.60

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Solution

The fourth proportional to 738,400.20, 1,107,600.30 and 419,535.60 is: 629,303.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,400.20 : 1,107,600.30 = 419,535.60 : x
  2. Step 2: Convert to fraction form
    738,400.20/1,107,600.30 = 419,535.60/x
  3. Step 3: Cross multiply
    738,400.20x = 1,107,600.30 × 419,535.60
  4. Step 4: Simplify right side
    738,400.20x = 464,677,756,420.68
  5. Step 5: Solve for x
    x = 464,677,756,420.68/738,400.20
  6. Step 6: Final answer
    x = 629,303.40

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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.