Home / 620,422.31-856,183.24-348,490.35

Finding the Fourth Proportional to 620,422.31, 856,183.24 and 348,490.35

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Solution

The fourth proportional to 620,422.31, 856,183.24 and 348,490.35 is: 480,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,422.31 : 856,183.24 = 348,490.35 : x
  2. Step 2: Convert to fraction form
    620,422.31/856,183.24 = 348,490.35/x
  3. Step 3: Cross multiply
    620,422.31x = 856,183.24 × 348,490.35
  4. Step 4: Simplify right side
    620,422.31x = 298,371,596,427.22
  5. Step 5: Solve for x
    x = 298,371,596,427.22/620,422.31
  6. Step 6: Final answer
    x = 480,916.94

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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.