Home / 491,939,168.04-678,880,569.15-280,242,861.12

Finding the Fourth Proportional to 491,939,168.04, 678,880,569.15 and 280,242,861.12

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Solution

The fourth proportional to 491,939,168.04, 678,880,569.15 and 280,242,861.12 is: 386,737,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,939,168.04 : 678,880,569.15 = 280,242,861.12 : x
  2. Step 2: Convert to fraction form
    491,939,168.04/678,880,569.15 = 280,242,861.12/x
  3. Step 3: Cross multiply
    491,939,168.04x = 678,880,569.15 × 280,242,861.12
  4. Step 4: Simplify right side
    491,939,168.04x = 190,251,433,057,370,016
  5. Step 5: Solve for x
    x = 190,251,433,057,370,016/491,939,168.04
  6. Step 6: Final answer
    x = 386,737,721.69

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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.