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Finding the Fourth Proportional to 2,668,681.76, 4,002,986.75 and 646,943.10

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Solution

The fourth proportional to 2,668,681.76, 4,002,986.75 and 646,943.10 is: 970,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668,681.76 : 4,002,986.75 = 646,943.10 : x
  2. Step 2: Convert to fraction form
    2,668,681.76/4,002,986.75 = 646,943.10/x
  3. Step 3: Cross multiply
    2,668,681.76x = 4,002,986.75 × 646,943.10
  4. Step 4: Simplify right side
    2,668,681.76x = 2,589,704,639,058.01
  5. Step 5: Solve for x
    x = 2,589,704,639,058.01/2,668,681.76
  6. Step 6: Final answer
    x = 970,405.94

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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.