Home / 852,106.24-1,278,820.32-320,111.20

Finding the Fourth Proportional to 852,106.24, 1,278,820.32 and 320,111.20

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Solution

The fourth proportional to 852,106.24, 1,278,820.32 and 320,111.20 is: 480,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,106.24 : 1,278,820.32 = 320,111.20 : x
  2. Step 2: Convert to fraction form
    852,106.24/1,278,820.32 = 320,111.20/x
  3. Step 3: Cross multiply
    852,106.24x = 1,278,820.32 × 320,111.20
  4. Step 4: Simplify right side
    852,106.24x = 409,364,707,219.58
  5. Step 5: Solve for x
    x = 409,364,707,219.58/852,106.24
  6. Step 6: Final answer
    x = 480,415.10

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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.