Home / 814,986.40-1,221,313.20-565,376.80

Finding the Fourth Proportional to 814,986.40, 1,221,313.20 and 565,376.80

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Solution

The fourth proportional to 814,986.40, 1,221,313.20 and 565,376.80 is: 847,256.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,986.40 : 1,221,313.20 = 565,376.80 : x
  2. Step 2: Convert to fraction form
    814,986.40/1,221,313.20 = 565,376.80/x
  3. Step 3: Cross multiply
    814,986.40x = 1,221,313.20 × 565,376.80
  4. Step 4: Simplify right side
    814,986.40x = 690,502,148,813.76
  5. Step 5: Solve for x
    x = 690,502,148,813.76/814,986.40
  6. Step 6: Final answer
    x = 847,256.04

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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.