Home / 680,342.61-1,020,845.88-427,741.86

Finding the Fourth Proportional to 680,342.61, 1,020,845.88 and 427,741.86

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Solution

The fourth proportional to 680,342.61, 1,020,845.88 and 427,741.86 is: 641,821.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,342.61 : 1,020,845.88 = 427,741.86 : x
  2. Step 2: Convert to fraction form
    680,342.61/1,020,845.88 = 427,741.86/x
  3. Step 3: Cross multiply
    680,342.61x = 1,020,845.88 × 427,741.86
  4. Step 4: Simplify right side
    680,342.61x = 436,658,515,484.54
  5. Step 5: Solve for x
    x = 436,658,515,484.54/680,342.61
  6. Step 6: Final answer
    x = 641,821.50

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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.