Home / 840,351.36-1,261,330.56-308,386.56

Finding the Fourth Proportional to 840,351.36, 1,261,330.56 and 308,386.56

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Solution

The fourth proportional to 840,351.36, 1,261,330.56 and 308,386.56 is: 462,874.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,351.36 : 1,261,330.56 = 308,386.56 : x
  2. Step 2: Convert to fraction form
    840,351.36/1,261,330.56 = 308,386.56/x
  3. Step 3: Cross multiply
    840,351.36x = 1,261,330.56 × 308,386.56
  4. Step 4: Simplify right side
    840,351.36x = 388,977,392,421.27
  5. Step 5: Solve for x
    x = 388,977,392,421.27/840,351.36
  6. Step 6: Final answer
    x = 462,874.71

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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.