Home / 810,999.20-1,119,133.67-448,401.28

Finding the Fourth Proportional to 810,999.20, 1,119,133.67 and 448,401.28

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Solution

The fourth proportional to 810,999.20, 1,119,133.67 and 448,401.28 is: 618,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,999.20 : 1,119,133.67 = 448,401.28 : x
  2. Step 2: Convert to fraction form
    810,999.20/1,119,133.67 = 448,401.28/x
  3. Step 3: Cross multiply
    810,999.20x = 1,119,133.67 × 448,401.28
  4. Step 4: Simplify right side
    810,999.20x = 501,820,970,119.10
  5. Step 5: Solve for x
    x = 501,820,970,119.10/810,999.20
  6. Step 6: Final answer
    x = 618,768.76

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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.