Home / 763,080.18-1,143,749.46-307,379.54

Finding the Fourth Proportional to 763,080.18, 1,143,749.46 and 307,379.54

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Solution

The fourth proportional to 763,080.18, 1,143,749.46 and 307,379.54 is: 460,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,080.18 : 1,143,749.46 = 307,379.54 : x
  2. Step 2: Convert to fraction form
    763,080.18/1,143,749.46 = 307,379.54/x
  3. Step 3: Cross multiply
    763,080.18x = 1,143,749.46 × 307,379.54
  4. Step 4: Simplify right side
    763,080.18x = 351,565,182,890.05
  5. Step 5: Solve for x
    x = 351,565,182,890.05/763,080.18
  6. Step 6: Final answer
    x = 460,718.54

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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.