Home / 631,387.35-947,316.31-378,849.09

Finding the Fourth Proportional to 631,387.35, 947,316.31 and 378,849.09

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Solution

The fourth proportional to 631,387.35, 947,316.31 and 378,849.09 is: 568,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,387.35 : 947,316.31 = 378,849.09 : x
  2. Step 2: Convert to fraction form
    631,387.35/947,316.31 = 378,849.09/x
  3. Step 3: Cross multiply
    631,387.35x = 947,316.31 × 378,849.09
  4. Step 4: Simplify right side
    631,387.35x = 358,889,921,985.66
  5. Step 5: Solve for x
    x = 358,889,921,985.66/631,387.35
  6. Step 6: Final answer
    x = 568,414.81

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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.