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Finding the Fourth Proportional to 483,326,999.70, 724,990,499.55 and 299,660,990.10

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Solution

The fourth proportional to 483,326,999.70, 724,990,499.55 and 299,660,990.10 is: 449,491,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,326,999.70 : 724,990,499.55 = 299,660,990.10 : x
  2. Step 2: Convert to fraction form
    483,326,999.70/724,990,499.55 = 299,660,990.10/x
  3. Step 3: Cross multiply
    483,326,999.70x = 724,990,499.55 × 299,660,990.10
  4. Step 4: Simplify right side
    483,326,999.70x = 217,251,370,908,246,592
  5. Step 5: Solve for x
    x = 217,251,370,908,246,592/483,326,999.70
  6. Step 6: Final answer
    x = 449,491,485.15

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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.