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Finding the Fourth Proportional to 449,651,811.30, 620,329,489.20 and 301,020,812.70

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Solution

The fourth proportional to 449,651,811.30, 620,329,489.20 and 301,020,812.70 is: 415,281,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,651,811.30 : 620,329,489.20 = 301,020,812.70 : x
  2. Step 2: Convert to fraction form
    449,651,811.30/620,329,489.20 = 301,020,812.70/x
  3. Step 3: Cross multiply
    449,651,811.30x = 620,329,489.20 × 301,020,812.70
  4. Step 4: Simplify right side
    449,651,811.30x = 186,732,086,980,759,872
  5. Step 5: Solve for x
    x = 186,732,086,980,759,872/449,651,811.30
  6. Step 6: Final answer
    x = 415,281,518.47

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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.