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Finding the Fourth Proportional to 449,592.35, 620,430.20 and 245,638.89

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Solution

The fourth proportional to 449,592.35, 620,430.20 and 245,638.89 is: 338,977.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,592.35 : 620,430.20 = 245,638.89 : x
  2. Step 2: Convert to fraction form
    449,592.35/620,430.20 = 245,638.89/x
  3. Step 3: Cross multiply
    449,592.35x = 620,430.20 × 245,638.89
  4. Step 4: Simplify right side
    449,592.35x = 152,401,783,598.47
  5. Step 5: Solve for x
    x = 152,401,783,598.47/449,592.35
  6. Step 6: Final answer
    x = 338,977.71

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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.