Home / 644,491.68-966,835.80-328,776.36

Finding the Fourth Proportional to 644,491.68, 966,835.80 and 328,776.36

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Solution

The fourth proportional to 644,491.68, 966,835.80 and 328,776.36 is: 493,214.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,491.68 : 966,835.80 = 328,776.36 : x
  2. Step 2: Convert to fraction form
    644,491.68/966,835.80 = 328,776.36/x
  3. Step 3: Cross multiply
    644,491.68x = 966,835.80 × 328,776.36
  4. Step 4: Simplify right side
    644,491.68x = 317,872,755,041.69
  5. Step 5: Solve for x
    x = 317,872,755,041.69/644,491.68
  6. Step 6: Final answer
    x = 493,214.68

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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.