Home / 486,337.22-671,142.78-282,438.26

Finding the Fourth Proportional to 486,337.22, 671,142.78 and 282,438.26

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Solution

The fourth proportional to 486,337.22, 671,142.78 and 282,438.26 is: 389,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,337.22 : 671,142.78 = 282,438.26 : x
  2. Step 2: Convert to fraction form
    486,337.22/671,142.78 = 282,438.26/x
  3. Step 3: Cross multiply
    486,337.22x = 671,142.78 × 282,438.26
  4. Step 4: Simplify right side
    486,337.22x = 189,556,395,639.05
  5. Step 5: Solve for x
    x = 189,556,395,639.05/486,337.22
  6. Step 6: Final answer
    x = 389,763.30

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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.