Home / 858,187.78-1,287,466.20-289,582.97

Finding the Fourth Proportional to 858,187.78, 1,287,466.20 and 289,582.97

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Solution

The fourth proportional to 858,187.78, 1,287,466.20 and 289,582.97 is: 434,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,187.78 : 1,287,466.20 = 289,582.97 : x
  2. Step 2: Convert to fraction form
    858,187.78/1,287,466.20 = 289,582.97/x
  3. Step 3: Cross multiply
    858,187.78x = 1,287,466.20 × 289,582.97
  4. Step 4: Simplify right side
    858,187.78x = 372,828,284,361.28
  5. Step 5: Solve for x
    x = 372,828,284,361.28/858,187.78
  6. Step 6: Final answer
    x = 434,436.72

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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.