Home / 643,779.20-965,668.80-377,667.20

Finding the Fourth Proportional to 643,779.20, 965,668.80 and 377,667.20

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Solution

The fourth proportional to 643,779.20, 965,668.80 and 377,667.20 is: 566,500.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,779.20 : 965,668.80 = 377,667.20 : x
  2. Step 2: Convert to fraction form
    643,779.20/965,668.80 = 377,667.20/x
  3. Step 3: Cross multiply
    643,779.20x = 965,668.80 × 377,667.20
  4. Step 4: Simplify right side
    643,779.20x = 364,701,431,823.36
  5. Step 5: Solve for x
    x = 364,701,431,823.36/643,779.20
  6. Step 6: Final answer
    x = 566,500.80

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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.