Home / 492,099,876.20-738,093,827.10-128,630,973.80

Finding the Fourth Proportional to 492,099,876.20, 738,093,827.10 and 128,630,973.80

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Solution

The fourth proportional to 492,099,876.20, 738,093,827.10 and 128,630,973.80 is: 192,931,826.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,099,876.20 : 738,093,827.10 = 128,630,973.80 : x
  2. Step 2: Convert to fraction form
    492,099,876.20/738,093,827.10 = 128,630,973.80/x
  3. Step 3: Cross multiply
    492,099,876.20x = 738,093,827.10 × 128,630,973.80
  4. Step 4: Simplify right side
    492,099,876.20x = 94,941,727,735,641,824
  5. Step 5: Solve for x
    x = 94,941,727,735,641,824/492,099,876.20
  6. Step 6: Final answer
    x = 192,931,826.09

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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.