Home / 851,708.40-1,277,076.60-319,246.80

Finding the Fourth Proportional to 851,708.40, 1,277,076.60 and 319,246.80

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Solution

The fourth proportional to 851,708.40, 1,277,076.60 and 319,246.80 is: 478,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,708.40 : 1,277,076.60 = 319,246.80 : x
  2. Step 2: Convert to fraction form
    851,708.40/1,277,076.60 = 319,246.80/x
  3. Step 3: Cross multiply
    851,708.40x = 1,277,076.60 × 319,246.80
  4. Step 4: Simplify right side
    851,708.40x = 407,702,617,904.88
  5. Step 5: Solve for x
    x = 407,702,617,904.88/851,708.40
  6. Step 6: Final answer
    x = 478,688.03

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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.