Home / 1,213,809.20-1,820,713.80-315,243.80

Finding the Fourth Proportional to 1,213,809.20, 1,820,713.80 and 315,243.80

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Solution

The fourth proportional to 1,213,809.20, 1,820,713.80 and 315,243.80 is: 472,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,809.20 : 1,820,713.80 = 315,243.80 : x
  2. Step 2: Convert to fraction form
    1,213,809.20/1,820,713.80 = 315,243.80/x
  3. Step 3: Cross multiply
    1,213,809.20x = 1,820,713.80 × 315,243.80
  4. Step 4: Simplify right side
    1,213,809.20x = 573,968,737,024.44
  5. Step 5: Solve for x
    x = 573,968,737,024.44/1,213,809.20
  6. Step 6: Final answer
    x = 472,865.70

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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.