Home / 620,942.07-931,401.45-338,430.51

Finding the Fourth Proportional to 620,942.07, 931,401.45 and 338,430.51

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Solution

The fourth proportional to 620,942.07, 931,401.45 and 338,430.51 is: 507,639.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,942.07 : 931,401.45 = 338,430.51 : x
  2. Step 2: Convert to fraction form
    620,942.07/931,401.45 = 338,430.51/x
  3. Step 3: Cross multiply
    620,942.07x = 931,401.45 × 338,430.51
  4. Step 4: Simplify right side
    620,942.07x = 315,214,667,738.24
  5. Step 5: Solve for x
    x = 315,214,667,738.24/620,942.07
  6. Step 6: Final answer
    x = 507,639.41

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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.