Home / 771,583.60-1,064,761.26-427,405.72

Finding the Fourth Proportional to 771,583.60, 1,064,761.26 and 427,405.72

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Solution

The fourth proportional to 771,583.60, 1,064,761.26 and 427,405.72 is: 589,806.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,583.60 : 1,064,761.26 = 427,405.72 : x
  2. Step 2: Convert to fraction form
    771,583.60/1,064,761.26 = 427,405.72/x
  3. Step 3: Cross multiply
    771,583.60x = 1,064,761.26 × 427,405.72
  4. Step 4: Simplify right side
    771,583.60x = 455,085,052,958.41
  5. Step 5: Solve for x
    x = 455,085,052,958.41/771,583.60
  6. Step 6: Final answer
    x = 589,806.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.