Home / 690,417.60-1,036,015.20-269,638.80

Finding the Fourth Proportional to 690,417.60, 1,036,015.20 and 269,638.80

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Solution

The fourth proportional to 690,417.60, 1,036,015.20 and 269,638.80 is: 404,610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,417.60 : 1,036,015.20 = 269,638.80 : x
  2. Step 2: Convert to fraction form
    690,417.60/1,036,015.20 = 269,638.80/x
  3. Step 3: Cross multiply
    690,417.60x = 1,036,015.20 × 269,638.80
  4. Step 4: Simplify right side
    690,417.60x = 279,349,895,309.76
  5. Step 5: Solve for x
    x = 279,349,895,309.76/690,417.60
  6. Step 6: Final answer
    x = 404,610.04

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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.