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Finding the Fourth Proportional to 608,978,665.83, 840,398,621 and 330,523,527.27

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Solution

The fourth proportional to 608,978,665.83, 840,398,621 and 330,523,527.27 is: 456,126,843.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,978,665.83 : 840,398,621 = 330,523,527.27 : x
  2. Step 2: Convert to fraction form
    608,978,665.83/840,398,621 = 330,523,527.27/x
  3. Step 3: Cross multiply
    608,978,665.83x = 840,398,621 × 330,523,527.27
  4. Step 4: Simplify right side
    608,978,665.83x = 277,771,516,525,763,872
  5. Step 5: Solve for x
    x = 277,771,516,525,763,872/608,978,665.83
  6. Step 6: Final answer
    x = 456,126,843.37

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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.