Home / 1,188,811.10-1,640,559.86-644,946.74

Finding the Fourth Proportional to 1,188,811.10, 1,640,559.86 and 644,946.74

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Solution

The fourth proportional to 1,188,811.10, 1,640,559.86 and 644,946.74 is: 890,026.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,811.10 : 1,640,559.86 = 644,946.74 : x
  2. Step 2: Convert to fraction form
    1,188,811.10/1,640,559.86 = 644,946.74/x
  3. Step 3: Cross multiply
    1,188,811.10x = 1,640,559.86 × 644,946.74
  4. Step 4: Simplify right side
    1,188,811.10x = 1,058,073,733,481.86
  5. Step 5: Solve for x
    x = 1,058,073,733,481.86/1,188,811.10
  6. Step 6: Final answer
    x = 890,026.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.