Home / 492,099,871.20-738,093,819.60-128,630,968.80

Finding the Fourth Proportional to 492,099,871.20, 738,093,819.60 and 128,630,968.80

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Solution

The fourth proportional to 492,099,871.20, 738,093,819.60 and 128,630,968.80 is: 192,931,818.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,099,871.20 : 738,093,819.60 = 128,630,968.80 : x
  2. Step 2: Convert to fraction form
    492,099,871.20/738,093,819.60 = 128,630,968.80/x
  3. Step 3: Cross multiply
    492,099,871.20x = 738,093,819.60 × 128,630,968.80
  4. Step 4: Simplify right side
    492,099,871.20x = 94,941,723,080,440,432
  5. Step 5: Solve for x
    x = 94,941,723,080,440,432/492,099,871.20
  6. Step 6: Final answer
    x = 192,931,818.59

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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.