Home / 805,123.20-1,207,684.02-206,083.40

Finding the Fourth Proportional to 805,123.20, 1,207,684.02 and 206,083.40

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Solution

The fourth proportional to 805,123.20, 1,207,684.02 and 206,083.40 is: 309,124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,123.20 : 1,207,684.02 = 206,083.40 : x
  2. Step 2: Convert to fraction form
    805,123.20/1,207,684.02 = 206,083.40/x
  3. Step 3: Cross multiply
    805,123.20x = 1,207,684.02 × 206,083.40
  4. Step 4: Simplify right side
    805,123.20x = 248,883,622,928.85
  5. Step 5: Solve for x
    x = 248,883,622,928.85/805,123.20
  6. Step 6: Final answer
    x = 309,124.89

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1.5x scale

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.