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Finding the Fourth Proportional to 448,860.58, 619,182.54 and 287,533.79

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Solution

The fourth proportional to 448,860.58, 619,182.54 and 287,533.79 is: 396,639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,860.58 : 619,182.54 = 287,533.79 : x
  2. Step 2: Convert to fraction form
    448,860.58/619,182.54 = 287,533.79/x
  3. Step 3: Cross multiply
    448,860.58x = 619,182.54 × 287,533.79
  4. Step 4: Simplify right side
    448,860.58x = 178,035,902,428.03
  5. Step 5: Solve for x
    x = 178,035,902,428.03/448,860.58
  6. Step 6: Final answer
    x = 396,639.65

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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.