Home / 990,438.24-1,486,247.68-359,401.28

Finding the Fourth Proportional to 990,438.24, 1,486,247.68 and 359,401.28

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Solution

The fourth proportional to 990,438.24, 1,486,247.68 and 359,401.28 is: 539,316.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,438.24 : 1,486,247.68 = 359,401.28 : x
  2. Step 2: Convert to fraction form
    990,438.24/1,486,247.68 = 359,401.28/x
  3. Step 3: Cross multiply
    990,438.24x = 1,486,247.68 × 359,401.28
  4. Step 4: Simplify right side
    990,438.24x = 534,159,318,589.03
  5. Step 5: Solve for x
    x = 534,159,318,589.03/990,438.24
  6. Step 6: Final answer
    x = 539,316.13

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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.