Home / 814,636.40-1,221,953.52-459,489.20

Finding the Fourth Proportional to 814,636.40, 1,221,953.52 and 459,489.20

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Solution

The fourth proportional to 814,636.40, 1,221,953.52 and 459,489.20 is: 689,233.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,636.40 : 1,221,953.52 = 459,489.20 : x
  2. Step 2: Convert to fraction form
    814,636.40/1,221,953.52 = 459,489.20/x
  3. Step 3: Cross multiply
    814,636.40x = 1,221,953.52 × 459,489.20
  4. Step 4: Simplify right side
    814,636.40x = 561,474,445,341.98
  5. Step 5: Solve for x
    x = 561,474,445,341.98/814,636.40
  6. Step 6: Final answer
    x = 689,233.19

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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.