Home / 753,003.36-1,129,945.68-280,015.20

Finding the Fourth Proportional to 753,003.36, 1,129,945.68 and 280,015.20

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Solution

The fourth proportional to 753,003.36, 1,129,945.68 and 280,015.20 is: 420,186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,003.36 : 1,129,945.68 = 280,015.20 : x
  2. Step 2: Convert to fraction form
    753,003.36/1,129,945.68 = 280,015.20/x
  3. Step 3: Cross multiply
    753,003.36x = 1,129,945.68 × 280,015.20
  4. Step 4: Simplify right side
    753,003.36x = 316,401,965,574.34
  5. Step 5: Solve for x
    x = 316,401,965,574.34/753,003.36
  6. Step 6: Final answer
    x = 420,186.66

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1.5x scale

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.