Home / 648,531.20-971,484.60-449,076.80

Finding the Fourth Proportional to 648,531.20, 971,484.60 and 449,076.80

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Solution

The fourth proportional to 648,531.20, 971,484.60 and 449,076.80 is: 672,706.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,531.20 : 971,484.60 = 449,076.80 : x
  2. Step 2: Convert to fraction form
    648,531.20/971,484.60 = 449,076.80/x
  3. Step 3: Cross multiply
    648,531.20x = 971,484.60 × 449,076.80
  4. Step 4: Simplify right side
    648,531.20x = 436,271,195,417.28
  5. Step 5: Solve for x
    x = 436,271,195,417.28/648,531.20
  6. Step 6: Final answer
    x = 672,706.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.