Home / 489,184.89-674,789.18-307,609.35

Finding the Fourth Proportional to 489,184.89, 674,789.18 and 307,609.35

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Solution

The fourth proportional to 489,184.89, 674,789.18 and 307,609.35 is: 424,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,184.89 : 674,789.18 = 307,609.35 : x
  2. Step 2: Convert to fraction form
    489,184.89/674,789.18 = 307,609.35/x
  3. Step 3: Cross multiply
    489,184.89x = 674,789.18 × 307,609.35
  4. Step 4: Simplify right side
    489,184.89x = 207,571,459,508.79
  5. Step 5: Solve for x
    x = 207,571,459,508.79/489,184.89
  6. Step 6: Final answer
    x = 424,321.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.