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Finding the Fourth Proportional to 531,120.07, 796,915.59 and 278,340.47

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Solution

The fourth proportional to 531,120.07, 796,915.59 and 278,340.47 is: 417,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,120.07 : 796,915.59 = 278,340.47 : x
  2. Step 2: Convert to fraction form
    531,120.07/796,915.59 = 278,340.47/x
  3. Step 3: Cross multiply
    531,120.07x = 796,915.59 × 278,340.47
  4. Step 4: Simplify right side
    531,120.07x = 221,813,854,494.65
  5. Step 5: Solve for x
    x = 221,813,854,494.65/531,120.07
  6. Step 6: Final answer
    x = 417,634.11

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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.