Home / 911,937.96-1,257,821.69-640,066.50

Finding the Fourth Proportional to 911,937.96, 1,257,821.69 and 640,066.50

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Solution

The fourth proportional to 911,937.96, 1,257,821.69 and 640,066.50 is: 882,833.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,937.96 : 1,257,821.69 = 640,066.50 : x
  2. Step 2: Convert to fraction form
    911,937.96/1,257,821.69 = 640,066.50/x
  3. Step 3: Cross multiply
    911,937.96x = 1,257,821.69 × 640,066.50
  4. Step 4: Simplify right side
    911,937.96x = 805,089,523,542.05
  5. Step 5: Solve for x
    x = 805,089,523,542.05/911,937.96
  6. Step 6: Final answer
    x = 882,833.66

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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.