Home / 449,890.40-620,829.84-258,910.40

Finding the Fourth Proportional to 449,890.40, 620,829.84 and 258,910.40

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Solution

The fourth proportional to 449,890.40, 620,829.84 and 258,910.40 is: 357,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,890.40 : 620,829.84 = 258,910.40 : x
  2. Step 2: Convert to fraction form
    449,890.40/620,829.84 = 258,910.40/x
  3. Step 3: Cross multiply
    449,890.40x = 620,829.84 × 258,910.40
  4. Step 4: Simplify right side
    449,890.40x = 160,739,302,206.34
  5. Step 5: Solve for x
    x = 160,739,302,206.34/449,890.40
  6. Step 6: Final answer
    x = 357,285.47

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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.