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Finding the Fourth Proportional to 445,504.50, 666,582.75 and 312,643.98

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Solution

The fourth proportional to 445,504.50, 666,582.75 and 312,643.98 is: 467,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,504.50 : 666,582.75 = 312,643.98 : x
  2. Step 2: Convert to fraction form
    445,504.50/666,582.75 = 312,643.98/x
  3. Step 3: Cross multiply
    445,504.50x = 666,582.75 × 312,643.98
  4. Step 4: Simplify right side
    445,504.50x = 208,403,083,959.35
  5. Step 5: Solve for x
    x = 208,403,083,959.35/445,504.50
  6. Step 6: Final answer
    x = 467,791.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.