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Finding the Fourth Proportional to 638,015.74, 880,481.65 and 366,133.37

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Solution

The fourth proportional to 638,015.74, 880,481.65 and 366,133.37 is: 505,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,015.74 : 880,481.65 = 366,133.37 : x
  2. Step 2: Convert to fraction form
    638,015.74/880,481.65 = 366,133.37/x
  3. Step 3: Cross multiply
    638,015.74x = 880,481.65 × 366,133.37
  4. Step 4: Simplify right side
    638,015.74x = 322,373,710,136.17
  5. Step 5: Solve for x
    x = 322,373,710,136.17/638,015.74
  6. Step 6: Final answer
    x = 505,275.48

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1.5x scale

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.