Home / 778,842.52-1,074,802.62-421,146.52

Finding the Fourth Proportional to 778,842.52, 1,074,802.62 and 421,146.52

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Solution

The fourth proportional to 778,842.52, 1,074,802.62 and 421,146.52 is: 581,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,842.52 : 1,074,802.62 = 421,146.52 : x
  2. Step 2: Convert to fraction form
    778,842.52/1,074,802.62 = 421,146.52/x
  3. Step 3: Cross multiply
    778,842.52x = 1,074,802.62 × 421,146.52
  4. Step 4: Simplify right side
    778,842.52x = 452,649,383,099.88
  5. Step 5: Solve for x
    x = 452,649,383,099.88/778,842.52
  6. Step 6: Final answer
    x = 581,182.17

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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.