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Finding the Fourth Proportional to 620,162.80, 855,813.76 and 348,232.84

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Solution

The fourth proportional to 620,162.80, 855,813.76 and 348,232.84 is: 480,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,162.80 : 855,813.76 = 348,232.84 : x
  2. Step 2: Convert to fraction form
    620,162.80/855,813.76 = 348,232.84/x
  3. Step 3: Cross multiply
    620,162.80x = 855,813.76 × 348,232.84
  4. Step 4: Simplify right side
    620,162.80x = 298,022,456,155.88
  5. Step 5: Solve for x
    x = 298,022,456,155.88/620,162.80
  6. Step 6: Final answer
    x = 480,555.20

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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.