Home / 491,939,157.54-678,880,554.57-280,242,850.71

Finding the Fourth Proportional to 491,939,157.54, 678,880,554.57 and 280,242,850.71

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Solution

The fourth proportional to 491,939,157.54, 678,880,554.57 and 280,242,850.71 is: 386,737,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,939,157.54 : 678,880,554.57 = 280,242,850.71 : x
  2. Step 2: Convert to fraction form
    491,939,157.54/678,880,554.57 = 280,242,850.71/x
  3. Step 3: Cross multiply
    491,939,157.54x = 678,880,554.57 × 280,242,850.71
  4. Step 4: Simplify right side
    491,939,157.54x = 190,251,421,904,282,528
  5. Step 5: Solve for x
    x = 190,251,421,904,282,528/491,939,157.54
  6. Step 6: Final answer
    x = 386,737,707.27

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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.