Home / 690,909.86-1,036,364.80-269,890.49

Finding the Fourth Proportional to 690,909.86, 1,036,364.80 and 269,890.49

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Solution

The fourth proportional to 690,909.86, 1,036,364.80 and 269,890.49 is: 404,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,909.86 : 1,036,364.80 = 269,890.49 : x
  2. Step 2: Convert to fraction form
    690,909.86/1,036,364.80 = 269,890.49/x
  3. Step 3: Cross multiply
    690,909.86x = 1,036,364.80 × 269,890.49
  4. Step 4: Simplify right side
    690,909.86x = 279,705,003,690.75
  5. Step 5: Solve for x
    x = 279,705,003,690.75/690,909.86
  6. Step 6: Final answer
    x = 404,835.74

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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.