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Finding the Fourth Proportional to 480,781, 663,398.58 and 265,879

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Solution

The fourth proportional to 480,781, 663,398.58 and 265,879 is: 366,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,781 : 663,398.58 = 265,879 : x
  2. Step 2: Convert to fraction form
    480,781/663,398.58 = 265,879/x
  3. Step 3: Cross multiply
    480,781x = 663,398.58 × 265,879
  4. Step 4: Simplify right side
    480,781x = 176,383,751,051.82
  5. Step 5: Solve for x
    x = 176,383,751,051.82/480,781
  6. Step 6: Final answer
    x = 366,869.22

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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.