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Finding the Fourth Proportional to 978,819.36, 1,468,054.08 and 622,775.76

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Solution

The fourth proportional to 978,819.36, 1,468,054.08 and 622,775.76 is: 934,052.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,819.36 : 1,468,054.08 = 622,775.76 : x
  2. Step 2: Convert to fraction form
    978,819.36/1,468,054.08 = 622,775.76/x
  3. Step 3: Cross multiply
    978,819.36x = 1,468,054.08 × 622,775.76
  4. Step 4: Simplify right side
    978,819.36x = 914,268,495,393.10
  5. Step 5: Solve for x
    x = 914,268,495,393.10/978,819.36
  6. Step 6: Final answer
    x = 934,052.32

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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.