Home / 631,384.73-947,312.37-378,846.47

Finding the Fourth Proportional to 631,384.73, 947,312.37 and 378,846.47

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Solution

The fourth proportional to 631,384.73, 947,312.37 and 378,846.47 is: 568,410.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,384.73 : 947,312.37 = 378,846.47 : x
  2. Step 2: Convert to fraction form
    631,384.73/947,312.37 = 378,846.47/x
  3. Step 3: Cross multiply
    631,384.73x = 947,312.37 × 378,846.47
  4. Step 4: Simplify right side
    631,384.73x = 358,885,942,625.27
  5. Step 5: Solve for x
    x = 358,885,942,625.27/631,384.73
  6. Step 6: Final answer
    x = 568,410.87

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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.