Home / 1,213,883.20-1,820,824.80-315,251.20

Finding the Fourth Proportional to 1,213,883.20, 1,820,824.80 and 315,251.20

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Solution

The fourth proportional to 1,213,883.20, 1,820,824.80 and 315,251.20 is: 472,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,883.20 : 1,820,824.80 = 315,251.20 : x
  2. Step 2: Convert to fraction form
    1,213,883.20/1,820,824.80 = 315,251.20/x
  3. Step 3: Cross multiply
    1,213,883.20x = 1,820,824.80 × 315,251.20
  4. Step 4: Simplify right side
    1,213,883.20x = 574,017,203,189.76
  5. Step 5: Solve for x
    x = 574,017,203,189.76/1,213,883.20
  6. Step 6: Final answer
    x = 472,876.80

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1.5x scale

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.