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Finding the Fourth Proportional to 576,077.40, 794,907.36 and 321,379.20

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Solution

The fourth proportional to 576,077.40, 794,907.36 and 321,379.20 is: 443,458.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,077.40 : 794,907.36 = 321,379.20 : x
  2. Step 2: Convert to fraction form
    576,077.40/794,907.36 = 321,379.20/x
  3. Step 3: Cross multiply
    576,077.40x = 794,907.36 × 321,379.20
  4. Step 4: Simplify right side
    576,077.40x = 255,466,691,430.91
  5. Step 5: Solve for x
    x = 255,466,691,430.91/576,077.40
  6. Step 6: Final answer
    x = 443,458.97

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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.