Home / 814,423.49-1,220,909.28-309,339.15

Finding the Fourth Proportional to 814,423.49, 1,220,909.28 and 309,339.15

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Solution

The fourth proportional to 814,423.49, 1,220,909.28 and 309,339.15 is: 463,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,423.49 : 1,220,909.28 = 309,339.15 : x
  2. Step 2: Convert to fraction form
    814,423.49/1,220,909.28 = 309,339.15/x
  3. Step 3: Cross multiply
    814,423.49x = 1,220,909.28 × 309,339.15
  4. Step 4: Simplify right side
    814,423.49x = 377,675,038,902.31
  5. Step 5: Solve for x
    x = 377,675,038,902.31/814,423.49
  6. Step 6: Final answer
    x = 463,732.99

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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.