Home / 491,939,166.54-678,880,567.08-280,242,859.62

Finding the Fourth Proportional to 491,939,166.54, 678,880,567.08 and 280,242,859.62

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Solution

The fourth proportional to 491,939,166.54, 678,880,567.08 and 280,242,859.62 is: 386,737,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,939,166.54 : 678,880,567.08 = 280,242,859.62 : x
  2. Step 2: Convert to fraction form
    491,939,166.54/678,880,567.08 = 280,242,859.62/x
  3. Step 3: Cross multiply
    491,939,166.54x = 678,880,567.08 × 280,242,859.62
  4. Step 4: Simplify right side
    491,939,166.54x = 190,251,431,458,946,464
  5. Step 5: Solve for x
    x = 190,251,431,458,946,464/491,939,166.54
  6. Step 6: Final answer
    x = 386,737,719.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.