Home / 1,315,124.46-1,971,100.44-640,194.12

Finding the Fourth Proportional to 1,315,124.46, 1,971,100.44 and 640,194.12

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Solution

The fourth proportional to 1,315,124.46, 1,971,100.44 and 640,194.12 is: 959,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,124.46 : 1,971,100.44 = 640,194.12 : x
  2. Step 2: Convert to fraction form
    1,315,124.46/1,971,100.44 = 640,194.12/x
  3. Step 3: Cross multiply
    1,315,124.46x = 1,971,100.44 × 640,194.12
  4. Step 4: Simplify right side
    1,315,124.46x = 1,261,886,911,617.41
  5. Step 5: Solve for x
    x = 1,261,886,911,617.41/1,315,124.46
  6. Step 6: Final answer
    x = 959,519.00

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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.