Home / 1,379,920.20-2,069,880.30-1,255,917.30

Finding the Fourth Proportional to 1,379,920.20, 2,069,880.30 and 1,255,917.30

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Solution

The fourth proportional to 1,379,920.20, 2,069,880.30 and 1,255,917.30 is: 1,883,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,920.20 : 2,069,880.30 = 1,255,917.30 : x
  2. Step 2: Convert to fraction form
    1,379,920.20/2,069,880.30 = 1,255,917.30/x
  3. Step 3: Cross multiply
    1,379,920.20x = 2,069,880.30 × 1,255,917.30
  4. Step 4: Simplify right side
    1,379,920.20x = 2,599,598,477,699.19
  5. Step 5: Solve for x
    x = 2,599,598,477,699.19/1,379,920.20
  6. Step 6: Final answer
    x = 1,883,875.95

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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.