Home / 840,518.70-1,260,012.60-307,911.30

Finding the Fourth Proportional to 840,518.70, 1,260,012.60 and 307,911.30

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Solution

The fourth proportional to 840,518.70, 1,260,012.60 and 307,911.30 is: 461,586.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,518.70 : 1,260,012.60 = 307,911.30 : x
  2. Step 2: Convert to fraction form
    840,518.70/1,260,012.60 = 307,911.30/x
  3. Step 3: Cross multiply
    840,518.70x = 1,260,012.60 × 307,911.30
  4. Step 4: Simplify right side
    840,518.70x = 387,972,117,682.38
  5. Step 5: Solve for x
    x = 387,972,117,682.38/840,518.70
  6. Step 6: Final answer
    x = 461,586.54

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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.