Home / 664,306,384.80-996,743,012.40-319,082,311.20

Finding the Fourth Proportional to 664,306,384.80, 996,743,012.40 and 319,082,311.20

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Solution

The fourth proportional to 664,306,384.80, 996,743,012.40 and 319,082,311.20 is: 478,759,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,306,384.80 : 996,743,012.40 = 319,082,311.20 : x
  2. Step 2: Convert to fraction form
    664,306,384.80/996,743,012.40 = 319,082,311.20/x
  3. Step 3: Cross multiply
    664,306,384.80x = 996,743,012.40 × 319,082,311.20
  4. Step 4: Simplify right side
    664,306,384.80x = 318,043,064,069,042,240
  5. Step 5: Solve for x
    x = 318,043,064,069,042,240/664,306,384.80
  6. Step 6: Final answer
    x = 478,759,607.53

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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.