Home / 869,744.70-1,200,256.38-487,763.28

Finding the Fourth Proportional to 869,744.70, 1,200,256.38 and 487,763.28

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Solution

The fourth proportional to 869,744.70, 1,200,256.38 and 487,763.28 is: 673,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,744.70 : 1,200,256.38 = 487,763.28 : x
  2. Step 2: Convert to fraction form
    869,744.70/1,200,256.38 = 487,763.28/x
  3. Step 3: Cross multiply
    869,744.70x = 1,200,256.38 × 487,763.28
  4. Step 4: Simplify right side
    869,744.70x = 585,440,988,749.73
  5. Step 5: Solve for x
    x = 585,440,988,749.73/869,744.70
  6. Step 6: Final answer
    x = 673,118.20

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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.