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Finding the Fourth Proportional to 1,786,769.85, 2,678,969.97 and 649,397.01

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Solution

The fourth proportional to 1,786,769.85, 2,678,969.97 and 649,397.01 is: 973,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,769.85 : 2,678,969.97 = 649,397.01 : x
  2. Step 2: Convert to fraction form
    1,786,769.85/2,678,969.97 = 649,397.01/x
  3. Step 3: Cross multiply
    1,786,769.85x = 2,678,969.97 × 649,397.01
  4. Step 4: Simplify right side
    1,786,769.85x = 1,739,715,088,397.79
  5. Step 5: Solve for x
    x = 1,739,715,088,397.79/1,786,769.85
  6. Step 6: Final answer
    x = 973,664.90

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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.