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Finding the Fourth Proportional to 531,117.68, 796,912 and 278,338.08

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Solution

The fourth proportional to 531,117.68, 796,912 and 278,338.08 is: 417,630.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,117.68 : 796,912 = 278,338.08 : x
  2. Step 2: Convert to fraction form
    531,117.68/796,912 = 278,338.08/x
  3. Step 3: Cross multiply
    531,117.68x = 796,912 × 278,338.08
  4. Step 4: Simplify right side
    531,117.68x = 221,810,956,008.96
  5. Step 5: Solve for x
    x = 221,810,956,008.96/531,117.68
  6. Step 6: Final answer
    x = 417,630.53

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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.