Home / 438,629.58-605,404.80-277,699.20

Finding the Fourth Proportional to 438,629.58, 605,404.80 and 277,699.20

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Solution

The fourth proportional to 438,629.58, 605,404.80 and 277,699.20 is: 383,285.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,629.58 : 605,404.80 = 277,699.20 : x
  2. Step 2: Convert to fraction form
    438,629.58/605,404.80 = 277,699.20/x
  3. Step 3: Cross multiply
    438,629.58x = 605,404.80 × 277,699.20
  4. Step 4: Simplify right side
    438,629.58x = 168,120,428,636.16
  5. Step 5: Solve for x
    x = 168,120,428,636.16/438,629.58
  6. Step 6: Final answer
    x = 383,285.66

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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.