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Finding the Fourth Proportional to 509,881.56, 703,653.60 and 280,448.52

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Solution

The fourth proportional to 509,881.56, 703,653.60 and 280,448.52 is: 387,028.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,881.56 : 703,653.60 = 280,448.52 : x
  2. Step 2: Convert to fraction form
    509,881.56/703,653.60 = 280,448.52/x
  3. Step 3: Cross multiply
    509,881.56x = 703,653.60 × 280,448.52
  4. Step 4: Simplify right side
    509,881.56x = 197,338,610,712.67
  5. Step 5: Solve for x
    x = 197,338,610,712.67/509,881.56
  6. Step 6: Final answer
    x = 387,028.33

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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.