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Finding the Fourth Proportional to 453,905.20, 680,857.80 and 383,921.20

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Solution

The fourth proportional to 453,905.20, 680,857.80 and 383,921.20 is: 575,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,905.20 : 680,857.80 = 383,921.20 : x
  2. Step 2: Convert to fraction form
    453,905.20/680,857.80 = 383,921.20/x
  3. Step 3: Cross multiply
    453,905.20x = 680,857.80 × 383,921.20
  4. Step 4: Simplify right side
    453,905.20x = 261,395,743,605.36
  5. Step 5: Solve for x
    x = 261,395,743,605.36/453,905.20
  6. Step 6: Final answer
    x = 575,881.80

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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.