Home / 1,281,879.90-1,920,285.45-1,124,286.30

Finding the Fourth Proportional to 1,281,879.90, 1,920,285.45 and 1,124,286.30

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Solution

The fourth proportional to 1,281,879.90, 1,920,285.45 and 1,124,286.30 is: 1,684,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,879.90 : 1,920,285.45 = 1,124,286.30 : x
  2. Step 2: Convert to fraction form
    1,281,879.90/1,920,285.45 = 1,124,286.30/x
  3. Step 3: Cross multiply
    1,281,879.90x = 1,920,285.45 × 1,124,286.30
  4. Step 4: Simplify right side
    1,281,879.90x = 2,158,950,623,524.34
  5. Step 5: Solve for x
    x = 2,158,950,623,524.34/1,281,879.90
  6. Step 6: Final answer
    x = 1,684,206.63

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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.