Home / 398,971,644.80-598,457,467.20-381,965,532.80

Finding the Fourth Proportional to 398,971,644.80, 598,457,467.20 and 381,965,532.80

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Solution

The fourth proportional to 398,971,644.80, 598,457,467.20 and 381,965,532.80 is: 572,948,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,971,644.80 : 598,457,467.20 = 381,965,532.80 : x
  2. Step 2: Convert to fraction form
    398,971,644.80/598,457,467.20 = 381,965,532.80/x
  3. Step 3: Cross multiply
    398,971,644.80x = 598,457,467.20 × 381,965,532.80
  4. Step 4: Simplify right side
    398,971,644.80x = 228,590,125,317,186,560
  5. Step 5: Solve for x
    x = 228,590,125,317,186,560/398,971,644.80
  6. Step 6: Final answer
    x = 572,948,299.20

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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.