Home / 850,621.86-1,275,890.36-318,103.74

Finding the Fourth Proportional to 850,621.86, 1,275,890.36 and 318,103.74

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Solution

The fourth proportional to 850,621.86, 1,275,890.36 and 318,103.74 is: 477,139.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,621.86 : 1,275,890.36 = 318,103.74 : x
  2. Step 2: Convert to fraction form
    850,621.86/1,275,890.36 = 318,103.74/x
  3. Step 3: Cross multiply
    850,621.86x = 1,275,890.36 × 318,103.74
  4. Step 4: Simplify right side
    850,621.86x = 405,865,495,345.95
  5. Step 5: Solve for x
    x = 405,865,495,345.95/850,621.86
  6. Step 6: Final answer
    x = 477,139.74

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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.