Home / 685,890.72-1,030,412.88-483,951.60

Finding the Fourth Proportional to 685,890.72, 1,030,412.88 and 483,951.60

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Solution

The fourth proportional to 685,890.72, 1,030,412.88 and 483,951.60 is: 727,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,890.72 : 1,030,412.88 = 483,951.60 : x
  2. Step 2: Convert to fraction form
    685,890.72/1,030,412.88 = 483,951.60/x
  3. Step 3: Cross multiply
    685,890.72x = 1,030,412.88 × 483,951.60
  4. Step 4: Simplify right side
    685,890.72x = 498,669,961,936.61
  5. Step 5: Solve for x
    x = 498,669,961,936.61/685,890.72
  6. Step 6: Final answer
    x = 727,039.96

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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.