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Finding the Fourth Proportional to 538,303.80, 809,205.30 and 461,321.40

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Solution

The fourth proportional to 538,303.80, 809,205.30 and 461,321.40 is: 693,481.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,303.80 : 809,205.30 = 461,321.40 : x
  2. Step 2: Convert to fraction form
    538,303.80/809,205.30 = 461,321.40/x
  3. Step 3: Cross multiply
    538,303.80x = 809,205.30 × 461,321.40
  4. Step 4: Simplify right side
    538,303.80x = 373,303,721,883.42
  5. Step 5: Solve for x
    x = 373,303,721,883.42/538,303.80
  6. Step 6: Final answer
    x = 693,481.49

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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.