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Finding the Fourth Proportional to 978,943.24, 1,468,239.70 and 622,899.64

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Solution

The fourth proportional to 978,943.24, 1,468,239.70 and 622,899.64 is: 934,238.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,943.24 : 1,468,239.70 = 622,899.64 : x
  2. Step 2: Convert to fraction form
    978,943.24/1,468,239.70 = 622,899.64/x
  3. Step 3: Cross multiply
    978,943.24x = 1,468,239.70 × 622,899.64
  4. Step 4: Simplify right side
    978,943.24x = 914,565,980,563.71
  5. Step 5: Solve for x
    x = 914,565,980,563.71/978,943.24
  6. Step 6: Final answer
    x = 934,238.01

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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.