Home / 432,581.70-648,872.40-315,001.28

Finding the Fourth Proportional to 432,581.70, 648,872.40 and 315,001.28

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Solution

The fourth proportional to 432,581.70, 648,872.40 and 315,001.28 is: 472,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,581.70 : 648,872.40 = 315,001.28 : x
  2. Step 2: Convert to fraction form
    432,581.70/648,872.40 = 315,001.28/x
  3. Step 3: Cross multiply
    432,581.70x = 648,872.40 × 315,001.28
  4. Step 4: Simplify right side
    432,581.70x = 204,395,636,556.67
  5. Step 5: Solve for x
    x = 204,395,636,556.67/432,581.70
  6. Step 6: Final answer
    x = 472,501.81

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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.