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Finding the Fourth Proportional to 577,428.84, 796,856.95 and 319,323.25

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Solution

The fourth proportional to 577,428.84, 796,856.95 and 319,323.25 is: 440,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,428.84 : 796,856.95 = 319,323.25 : x
  2. Step 2: Convert to fraction form
    577,428.84/796,856.95 = 319,323.25/x
  3. Step 3: Cross multiply
    577,428.84x = 796,856.95 × 319,323.25
  4. Step 4: Simplify right side
    577,428.84x = 254,454,951,059.09
  5. Step 5: Solve for x
    x = 254,454,951,059.09/577,428.84
  6. Step 6: Final answer
    x = 440,668.93

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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.