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Finding the Fourth Proportional to 1,015,798.82, 1,401,945.17 and 628,738.39

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Solution

The fourth proportional to 1,015,798.82, 1,401,945.17 and 628,738.39 is: 867,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,798.82 : 1,401,945.17 = 628,738.39 : x
  2. Step 2: Convert to fraction form
    1,015,798.82/1,401,945.17 = 628,738.39/x
  3. Step 3: Cross multiply
    1,015,798.82x = 1,401,945.17 × 628,738.39
  4. Step 4: Simplify right side
    1,015,798.82x = 881,456,749,054.08
  5. Step 5: Solve for x
    x = 881,456,749,054.08/1,015,798.82
  6. Step 6: Final answer
    x = 867,747.36

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1.5x scale

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.