Home / 579,442,515.20-869,163,772.80-443,393,619.20

Finding the Fourth Proportional to 579,442,515.20, 869,163,772.80 and 443,393,619.20

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Solution

The fourth proportional to 579,442,515.20, 869,163,772.80 and 443,393,619.20 is: 665,090,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,442,515.20 : 869,163,772.80 = 443,393,619.20 : x
  2. Step 2: Convert to fraction form
    579,442,515.20/869,163,772.80 = 443,393,619.20/x
  3. Step 3: Cross multiply
    579,442,515.20x = 869,163,772.80 × 443,393,619.20
  4. Step 4: Simplify right side
    579,442,515.20x = 385,381,670,899,318,464
  5. Step 5: Solve for x
    x = 385,381,670,899,318,464/579,442,515.20
  6. Step 6: Final answer
    x = 665,090,428.80

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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.