Home / 449,500.10-620,328.94-258,513.62

Finding the Fourth Proportional to 449,500.10, 620,328.94 and 258,513.62

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Solution

The fourth proportional to 449,500.10, 620,328.94 and 258,513.62 is: 356,759.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,500.10 : 620,328.94 = 258,513.62 : x
  2. Step 2: Convert to fraction form
    449,500.10/620,328.94 = 258,513.62/x
  3. Step 3: Cross multiply
    449,500.10x = 620,328.94 × 258,513.62
  4. Step 4: Simplify right side
    449,500.10x = 160,363,479,870.16
  5. Step 5: Solve for x
    x = 160,363,479,870.16/449,500.10
  6. Step 6: Final answer
    x = 356,759.61

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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.