Home / 690,415.60-1,036,012.20-269,636.80

Finding the Fourth Proportional to 690,415.60, 1,036,012.20 and 269,636.80

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Solution

The fourth proportional to 690,415.60, 1,036,012.20 and 269,636.80 is: 404,607.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,415.60 : 1,036,012.20 = 269,636.80 : x
  2. Step 2: Convert to fraction form
    690,415.60/1,036,012.20 = 269,636.80/x
  3. Step 3: Cross multiply
    690,415.60x = 1,036,012.20 × 269,636.80
  4. Step 4: Simplify right side
    690,415.60x = 279,347,014,368.96
  5. Step 5: Solve for x
    x = 279,347,014,368.96/690,415.60
  6. Step 6: Final answer
    x = 404,607.04

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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.