Home / 644,678.47-965,688.75-377,629.36

Finding the Fourth Proportional to 644,678.47, 965,688.75 and 377,629.36

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Solution

The fourth proportional to 644,678.47, 965,688.75 and 377,629.36 is: 565,665.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,678.47 : 965,688.75 = 377,629.36 : x
  2. Step 2: Convert to fraction form
    644,678.47/965,688.75 = 377,629.36/x
  3. Step 3: Cross multiply
    644,678.47x = 965,688.75 × 377,629.36
  4. Step 4: Simplify right side
    644,678.47x = 364,672,424,621.70
  5. Step 5: Solve for x
    x = 364,672,424,621.70/644,678.47
  6. Step 6: Final answer
    x = 565,665.59

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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.