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Finding the Fourth Proportional to 1,777,640, 2,666,460 and 447,944

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Solution

The fourth proportional to 1,777,640, 2,666,460 and 447,944 is: 671,916

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777,640 : 2,666,460 = 447,944 : x
  2. Step 2: Convert to fraction form
    1,777,640/2,666,460 = 447,944/x
  3. Step 3: Cross multiply
    1,777,640x = 2,666,460 × 447,944
  4. Step 4: Simplify right side
    1,777,640x = 1,194,424,758,240
  5. Step 5: Solve for x
    x = 1,194,424,758,240/1,777,640
  6. Step 6: Final answer
    x = 671,916

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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.