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Finding the Fourth Proportional to 821,300.80, 1,133,392.80 and 463,604.80

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Solution

The fourth proportional to 821,300.80, 1,133,392.80 and 463,604.80 is: 639,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,300.80 : 1,133,392.80 = 463,604.80 : x
  2. Step 2: Convert to fraction form
    821,300.80/1,133,392.80 = 463,604.80/x
  3. Step 3: Cross multiply
    821,300.80x = 1,133,392.80 × 463,604.80
  4. Step 4: Simplify right side
    821,300.80x = 525,446,342,365.44
  5. Step 5: Solve for x
    x = 525,446,342,365.44/821,300.80
  6. Step 6: Final answer
    x = 639,773.32

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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.