Home / 852,108.49-1,278,823.70-320,113.45

Finding the Fourth Proportional to 852,108.49, 1,278,823.70 and 320,113.45

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Solution

The fourth proportional to 852,108.49, 1,278,823.70 and 320,113.45 is: 480,418.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,108.49 : 1,278,823.70 = 320,113.45 : x
  2. Step 2: Convert to fraction form
    852,108.49/1,278,823.70 = 320,113.45/x
  3. Step 3: Cross multiply
    852,108.49x = 1,278,823.70 × 320,113.45
  4. Step 4: Simplify right side
    852,108.49x = 409,368,664,948.20
  5. Step 5: Solve for x
    x = 409,368,664,948.20/852,108.49
  6. Step 6: Final answer
    x = 480,418.48

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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.