Home / 1,260,328.80-1,890,493.20-419,010.40

Finding the Fourth Proportional to 1,260,328.80, 1,890,493.20 and 419,010.40

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Solution

The fourth proportional to 1,260,328.80, 1,890,493.20 and 419,010.40 is: 628,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,328.80 : 1,890,493.20 = 419,010.40 : x
  2. Step 2: Convert to fraction form
    1,260,328.80/1,890,493.20 = 419,010.40/x
  3. Step 3: Cross multiply
    1,260,328.80x = 1,890,493.20 × 419,010.40
  4. Step 4: Simplify right side
    1,260,328.80x = 792,136,311,929.28
  5. Step 5: Solve for x
    x = 792,136,311,929.28/1,260,328.80
  6. Step 6: Final answer
    x = 628,515.60

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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.