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Finding the Fourth Proportional to 1,174,223, 1,620,427.74 and 637,679

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Solution

The fourth proportional to 1,174,223, 1,620,427.74 and 637,679 is: 879,997.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,223 : 1,620,427.74 = 637,679 : x
  2. Step 2: Convert to fraction form
    1,174,223/1,620,427.74 = 637,679/x
  3. Step 3: Cross multiply
    1,174,223x = 1,620,427.74 × 637,679
  4. Step 4: Simplify right side
    1,174,223x = 1,033,312,740,815.46
  5. Step 5: Solve for x
    x = 1,033,312,740,815.46/1,174,223
  6. Step 6: Final answer
    x = 879,997.02

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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.