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Finding the Fourth Proportional to 432,699.71, 648,168.28 and 353,021.63

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Solution

The fourth proportional to 432,699.71, 648,168.28 and 353,021.63 is: 528,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,699.71 : 648,168.28 = 353,021.63 : x
  2. Step 2: Convert to fraction form
    432,699.71/648,168.28 = 353,021.63/x
  3. Step 3: Cross multiply
    432,699.71x = 648,168.28 × 353,021.63
  4. Step 4: Simplify right side
    432,699.71x = 228,817,418,596.50
  5. Step 5: Solve for x
    x = 228,817,418,596.50/432,699.71
  6. Step 6: Final answer
    x = 528,813.44

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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.