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Finding the Fourth Proportional to 1,030,796, 1,422,654 and 628,621.28

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Solution

The fourth proportional to 1,030,796, 1,422,654 and 628,621.28 is: 867,592.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,796 : 1,422,654 = 628,621.28 : x
  2. Step 2: Convert to fraction form
    1,030,796/1,422,654 = 628,621.28/x
  3. Step 3: Cross multiply
    1,030,796x = 1,422,654 × 628,621.28
  4. Step 4: Simplify right side
    1,030,796x = 894,310,578,477.12
  5. Step 5: Solve for x
    x = 894,310,578,477.12/1,030,796
  6. Step 6: Final answer
    x = 867,592.21

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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.