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Finding the Fourth Proportional to 432,001.70, 648,002.55 and 325,556.90

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Solution

The fourth proportional to 432,001.70, 648,002.55 and 325,556.90 is: 488,335.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,001.70 : 648,002.55 = 325,556.90 : x
  2. Step 2: Convert to fraction form
    432,001.70/648,002.55 = 325,556.90/x
  3. Step 3: Cross multiply
    432,001.70x = 648,002.55 × 325,556.90
  4. Step 4: Simplify right side
    432,001.70x = 210,961,701,370.10
  5. Step 5: Solve for x
    x = 210,961,701,370.10/432,001.70
  6. Step 6: Final answer
    x = 488,335.35

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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.