Home / 851,667.40-1,277,015.10-319,205.80

Finding the Fourth Proportional to 851,667.40, 1,277,015.10 and 319,205.80

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Solution

The fourth proportional to 851,667.40, 1,277,015.10 and 319,205.80 is: 478,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,667.40 : 1,277,015.10 = 319,205.80 : x
  2. Step 2: Convert to fraction form
    851,667.40/1,277,015.10 = 319,205.80/x
  3. Step 3: Cross multiply
    851,667.40x = 1,277,015.10 × 319,205.80
  4. Step 4: Simplify right side
    851,667.40x = 407,630,626,607.58
  5. Step 5: Solve for x
    x = 407,630,626,607.58/851,667.40
  6. Step 6: Final answer
    x = 478,626.55

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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.