Home / 742,660.75-1,112,072.57-512,559.76

Finding the Fourth Proportional to 742,660.75, 1,112,072.57 and 512,559.76

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Solution

The fourth proportional to 742,660.75, 1,112,072.57 and 512,559.76 is: 767,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,660.75 : 1,112,072.57 = 512,559.76 : x
  2. Step 2: Convert to fraction form
    742,660.75/1,112,072.57 = 512,559.76/x
  3. Step 3: Cross multiply
    742,660.75x = 1,112,072.57 × 512,559.76
  4. Step 4: Simplify right side
    742,660.75x = 570,003,646,958.92
  5. Step 5: Solve for x
    x = 570,003,646,958.92/742,660.75
  6. Step 6: Final answer
    x = 767,515.51

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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.