Home / 851,702.40-1,277,067.60-319,240.80

Finding the Fourth Proportional to 851,702.40, 1,277,067.60 and 319,240.80

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Solution

The fourth proportional to 851,702.40, 1,277,067.60 and 319,240.80 is: 478,679.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,702.40 : 1,277,067.60 = 319,240.80 : x
  2. Step 2: Convert to fraction form
    851,702.40/1,277,067.60 = 319,240.80/x
  3. Step 3: Cross multiply
    851,702.40x = 1,277,067.60 × 319,240.80
  4. Step 4: Simplify right side
    851,702.40x = 407,692,082,278.08
  5. Step 5: Solve for x
    x = 407,692,082,278.08/851,702.40
  6. Step 6: Final answer
    x = 478,679.03

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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.