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Finding the Fourth Proportional to 1,313,312.13, 1,963,964.88 and 954,687.87

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Solution

The fourth proportional to 1,313,312.13, 1,963,964.88 and 954,687.87 is: 1,427,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,312.13 : 1,963,964.88 = 954,687.87 : x
  2. Step 2: Convert to fraction form
    1,313,312.13/1,963,964.88 = 954,687.87/x
  3. Step 3: Cross multiply
    1,313,312.13x = 1,963,964.88 × 954,687.87
  4. Step 4: Simplify right side
    1,313,312.13x = 1,874,973,448,042.01
  5. Step 5: Solve for x
    x = 1,874,973,448,042.01/1,313,312.13
  6. Step 6: Final answer
    x = 1,427,667.81

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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.