Home / 644,306.10-965,038.05-403,636.38

Finding the Fourth Proportional to 644,306.10, 965,038.05 and 403,636.38

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Solution

The fourth proportional to 644,306.10, 965,038.05 and 403,636.38 is: 604,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,306.10 : 965,038.05 = 403,636.38 : x
  2. Step 2: Convert to fraction form
    644,306.10/965,038.05 = 403,636.38/x
  3. Step 3: Cross multiply
    644,306.10x = 965,038.05 × 403,636.38
  4. Step 4: Simplify right side
    644,306.10x = 389,524,465,064.26
  5. Step 5: Solve for x
    x = 389,524,465,064.26/644,306.10
  6. Step 6: Final answer
    x = 604,564.30

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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.