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Finding the Fourth Proportional to 1,964,686.72, 2,711,240.64 and 1,105,246.72

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Solution

The fourth proportional to 1,964,686.72, 2,711,240.64 and 1,105,246.72 is: 1,525,225.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,686.72 : 2,711,240.64 = 1,105,246.72 : x
  2. Step 2: Convert to fraction form
    1,964,686.72/2,711,240.64 = 1,105,246.72/x
  3. Step 3: Cross multiply
    1,964,686.72x = 2,711,240.64 × 1,105,246.72
  4. Step 4: Simplify right side
    1,964,686.72x = 2,996,589,824,490.70
  5. Step 5: Solve for x
    x = 2,996,589,824,490.70/1,964,686.72
  6. Step 6: Final answer
    x = 1,525,225.27

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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.