Home / 858,030.71-1,287,120.76-281,481.05

Finding the Fourth Proportional to 858,030.71, 1,287,120.76 and 281,481.05

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Solution

The fourth proportional to 858,030.71, 1,287,120.76 and 281,481.05 is: 422,246.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,030.71 : 1,287,120.76 = 281,481.05 : x
  2. Step 2: Convert to fraction form
    858,030.71/1,287,120.76 = 281,481.05/x
  3. Step 3: Cross multiply
    858,030.71x = 1,287,120.76 × 281,481.05
  4. Step 4: Simplify right side
    858,030.71x = 362,300,105,515.70
  5. Step 5: Solve for x
    x = 362,300,105,515.70/858,030.71
  6. Step 6: Final answer
    x = 422,246.08

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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.