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Finding the Fourth Proportional to 673,604.40, 929,676.24 and 419,037.60

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Solution

The fourth proportional to 673,604.40, 929,676.24 and 419,037.60 is: 578,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,604.40 : 929,676.24 = 419,037.60 : x
  2. Step 2: Convert to fraction form
    673,604.40/929,676.24 = 419,037.60/x
  3. Step 3: Cross multiply
    673,604.40x = 929,676.24 × 419,037.60
  4. Step 4: Simplify right side
    673,604.40x = 389,569,300,386.62
  5. Step 5: Solve for x
    x = 389,569,300,386.62/673,604.40
  6. Step 6: Final answer
    x = 578,335.44

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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.