Home / 856,006.80-1,284,010.20-413,638.80

Finding the Fourth Proportional to 856,006.80, 1,284,010.20 and 413,638.80

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Solution

The fourth proportional to 856,006.80, 1,284,010.20 and 413,638.80 is: 620,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,006.80 : 1,284,010.20 = 413,638.80 : x
  2. Step 2: Convert to fraction form
    856,006.80/1,284,010.20 = 413,638.80/x
  3. Step 3: Cross multiply
    856,006.80x = 1,284,010.20 × 413,638.80
  4. Step 4: Simplify right side
    856,006.80x = 531,116,438,315.76
  5. Step 5: Solve for x
    x = 531,116,438,315.76/856,006.80
  6. Step 6: Final answer
    x = 620,458.20

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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.