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Finding the Fourth Proportional to 1,269,907.68, 1,904,905.44 and 638,477.28

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Solution

The fourth proportional to 1,269,907.68, 1,904,905.44 and 638,477.28 is: 957,738.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,907.68 : 1,904,905.44 = 638,477.28 : x
  2. Step 2: Convert to fraction form
    1,269,907.68/1,904,905.44 = 638,477.28/x
  3. Step 3: Cross multiply
    1,269,907.68x = 1,904,905.44 × 638,477.28
  4. Step 4: Simplify right side
    1,269,907.68x = 1,216,238,843,988.40
  5. Step 5: Solve for x
    x = 1,216,238,843,988.40/1,269,907.68
  6. Step 6: Final answer
    x = 957,738.00

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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.