Home / 1,208,015.40-1,812,015.90-309,455.40

Finding the Fourth Proportional to 1,208,015.40, 1,812,015.90 and 309,455.40

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Solution

The fourth proportional to 1,208,015.40, 1,812,015.90 and 309,455.40 is: 464,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,015.40 : 1,812,015.90 = 309,455.40 : x
  2. Step 2: Convert to fraction form
    1,208,015.40/1,812,015.90 = 309,455.40/x
  3. Step 3: Cross multiply
    1,208,015.40x = 1,812,015.90 × 309,455.40
  4. Step 4: Simplify right side
    1,208,015.40x = 560,738,105,140.86
  5. Step 5: Solve for x
    x = 560,738,105,140.86/1,208,015.40
  6. Step 6: Final answer
    x = 464,181.26

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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.