Home / 869,749.20-1,200,262.59-487,767.78

Finding the Fourth Proportional to 869,749.20, 1,200,262.59 and 487,767.78

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Solution

The fourth proportional to 869,749.20, 1,200,262.59 and 487,767.78 is: 673,124.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,749.20 : 1,200,262.59 = 487,767.78 : x
  2. Step 2: Convert to fraction form
    869,749.20/1,200,262.59 = 487,767.78/x
  3. Step 3: Cross multiply
    869,749.20x = 1,200,262.59 × 487,767.78
  4. Step 4: Simplify right side
    869,749.20x = 585,449,418,941.35
  5. Step 5: Solve for x
    x = 585,449,418,941.35/869,749.20
  6. Step 6: Final answer
    x = 673,124.41

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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.