Home / 644,573,498.40-966,860,247.60-213,696,007.20

Finding the Fourth Proportional to 644,573,498.40, 966,860,247.60 and 213,696,007.20

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Solution

The fourth proportional to 644,573,498.40, 966,860,247.60 and 213,696,007.20 is: 320,544,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,573,498.40 : 966,860,247.60 = 213,696,007.20 : x
  2. Step 2: Convert to fraction form
    644,573,498.40/966,860,247.60 = 213,696,007.20/x
  3. Step 3: Cross multiply
    644,573,498.40x = 966,860,247.60 × 213,696,007.20
  4. Step 4: Simplify right side
    644,573,498.40x = 206,614,174,432,523,392
  5. Step 5: Solve for x
    x = 206,614,174,432,523,392/644,573,498.40
  6. Step 6: Final answer
    x = 320,544,010.80

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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.