Home / 720,200,385.41-993,877,540.36-390,175,524.41

Finding the Fourth Proportional to 720,200,385.41, 993,877,540.36 and 390,175,524.41

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Solution

The fourth proportional to 720,200,385.41, 993,877,540.36 and 390,175,524.41 is: 538,442,770.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,200,385.41 : 993,877,540.36 = 390,175,524.41 : x
  2. Step 2: Convert to fraction form
    720,200,385.41/993,877,540.36 = 390,175,524.41/x
  3. Step 3: Cross multiply
    720,200,385.41x = 993,877,540.36 × 390,175,524.41
  4. Step 4: Simplify right side
    720,200,385.41x = 387,786,690,503,339,072
  5. Step 5: Solve for x
    x = 387,786,690,503,339,072/720,200,385.41
  6. Step 6: Final answer
    x = 538,442,770.04

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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.