Home / 2,680,512.40-4,020,768.60-685,968.40

Finding the Fourth Proportional to 2,680,512.40, 4,020,768.60 and 685,968.40

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Solution

The fourth proportional to 2,680,512.40, 4,020,768.60 and 685,968.40 is: 1,028,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680,512.40 : 4,020,768.60 = 685,968.40 : x
  2. Step 2: Convert to fraction form
    2,680,512.40/4,020,768.60 = 685,968.40/x
  3. Step 3: Cross multiply
    2,680,512.40x = 4,020,768.60 × 685,968.40
  4. Step 4: Simplify right side
    2,680,512.40x = 2,758,120,203,312.24
  5. Step 5: Solve for x
    x = 2,758,120,203,312.24/2,680,512.40
  6. Step 6: Final answer
    x = 1,028,952.60

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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.