Home / 858,000.54-1,287,339.80-325,662.87

Finding the Fourth Proportional to 858,000.54, 1,287,339.80 and 325,662.87

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Solution

The fourth proportional to 858,000.54, 1,287,339.80 and 325,662.87 is: 488,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,000.54 : 1,287,339.80 = 325,662.87 : x
  2. Step 2: Convert to fraction form
    858,000.54/1,287,339.80 = 325,662.87/x
  3. Step 3: Cross multiply
    858,000.54x = 1,287,339.80 × 325,662.87
  4. Step 4: Simplify right side
    858,000.54x = 419,238,772,304.91
  5. Step 5: Solve for x
    x = 419,238,772,304.91/858,000.54
  6. Step 6: Final answer
    x = 488,622.97

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1.5x scale

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.