Home / 687,409.96-1,030,781.58-403,193.38

Finding the Fourth Proportional to 687,409.96, 1,030,781.58 and 403,193.38

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Solution

The fourth proportional to 687,409.96, 1,030,781.58 and 403,193.38 is: 604,594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,409.96 : 1,030,781.58 = 403,193.38 : x
  2. Step 2: Convert to fraction form
    687,409.96/1,030,781.58 = 403,193.38/x
  3. Step 3: Cross multiply
    687,409.96x = 1,030,781.58 × 403,193.38
  4. Step 4: Simplify right side
    687,409.96x = 415,604,309,281.94
  5. Step 5: Solve for x
    x = 415,604,309,281.94/687,409.96
  6. Step 6: Final answer
    x = 604,594.54

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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.