Home / 913,309.74-1,260,309.42-499,762.62

Finding the Fourth Proportional to 913,309.74, 1,260,309.42 and 499,762.62

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Solution

The fourth proportional to 913,309.74, 1,260,309.42 and 499,762.62 is: 689,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,309.74 : 1,260,309.42 = 499,762.62 : x
  2. Step 2: Convert to fraction form
    913,309.74/1,260,309.42 = 499,762.62/x
  3. Step 3: Cross multiply
    913,309.74x = 1,260,309.42 × 499,762.62
  4. Step 4: Simplify right side
    913,309.74x = 629,855,537,749.88
  5. Step 5: Solve for x
    x = 629,855,537,749.88/913,309.74
  6. Step 6: Final answer
    x = 689,640.67

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1.5x scale

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.