Home / 1,208,247.40-1,812,364.70-309,687.40

Finding the Fourth Proportional to 1,208,247.40, 1,812,364.70 and 309,687.40

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Solution

The fourth proportional to 1,208,247.40, 1,812,364.70 and 309,687.40 is: 464,529.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,247.40 : 1,812,364.70 = 309,687.40 : x
  2. Step 2: Convert to fraction form
    1,208,247.40/1,812,364.70 = 309,687.40/x
  3. Step 3: Cross multiply
    1,208,247.40x = 1,812,364.70 × 309,687.40
  4. Step 4: Simplify right side
    1,208,247.40x = 561,266,511,794.78
  5. Step 5: Solve for x
    x = 561,266,511,794.78/1,208,247.40
  6. Step 6: Final answer
    x = 464,529.46

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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.