Home / 1,015,489.98-1,401,519.72-628,430.06

Finding the Fourth Proportional to 1,015,489.98, 1,401,519.72 and 628,430.06

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Solution

The fourth proportional to 1,015,489.98, 1,401,519.72 and 628,430.06 is: 867,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,489.98 : 1,401,519.72 = 628,430.06 : x
  2. Step 2: Convert to fraction form
    1,015,489.98/1,401,519.72 = 628,430.06/x
  3. Step 3: Cross multiply
    1,015,489.98x = 1,401,519.72 × 628,430.06
  4. Step 4: Simplify right side
    1,015,489.98x = 880,757,114,723.19
  5. Step 5: Solve for x
    x = 880,757,114,723.19/1,015,489.98
  6. Step 6: Final answer
    x = 867,322.31

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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.