Home / 803,814.60-1,205,138.70-330,256.20

Finding the Fourth Proportional to 803,814.60, 1,205,138.70 and 330,256.20

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Solution

The fourth proportional to 803,814.60, 1,205,138.70 and 330,256.20 is: 495,144.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,814.60 : 1,205,138.70 = 330,256.20 : x
  2. Step 2: Convert to fraction form
    803,814.60/1,205,138.70 = 330,256.20/x
  3. Step 3: Cross multiply
    803,814.60x = 1,205,138.70 × 330,256.20
  4. Step 4: Simplify right side
    803,814.60x = 398,004,527,534.94
  5. Step 5: Solve for x
    x = 398,004,527,534.94/803,814.60
  6. Step 6: Final answer
    x = 495,144.69

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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.