Home / 620,822.78-856,811.53-348,902.13

Finding the Fourth Proportional to 620,822.78, 856,811.53 and 348,902.13

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Solution

The fourth proportional to 620,822.78, 856,811.53 and 348,902.13 is: 481,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,822.78 : 856,811.53 = 348,902.13 : x
  2. Step 2: Convert to fraction form
    620,822.78/856,811.53 = 348,902.13/x
  3. Step 3: Cross multiply
    620,822.78x = 856,811.53 × 348,902.13
  4. Step 4: Simplify right side
    620,822.78x = 298,943,367,825.56
  5. Step 5: Solve for x
    x = 298,943,367,825.56/620,822.78
  6. Step 6: Final answer
    x = 481,527.70

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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.