Home / 579,920,004.20-869,880,006.30-321,930,986.60

Finding the Fourth Proportional to 579,920,004.20, 869,880,006.30 and 321,930,986.60

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Solution

The fourth proportional to 579,920,004.20, 869,880,006.30 and 321,930,986.60 is: 482,896,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,920,004.20 : 869,880,006.30 = 321,930,986.60 : x
  2. Step 2: Convert to fraction form
    579,920,004.20/869,880,006.30 = 321,930,986.60/x
  3. Step 3: Cross multiply
    579,920,004.20x = 869,880,006.30 × 321,930,986.60
  4. Step 4: Simplify right side
    579,920,004.20x = 280,041,328,651,773,216
  5. Step 5: Solve for x
    x = 280,041,328,651,773,216/579,920,004.20
  6. Step 6: Final answer
    x = 482,896,479.90

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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.