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Finding the Fourth Proportional to 669,411.02, 923,556.28 and 427,835

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Solution

The fourth proportional to 669,411.02, 923,556.28 and 427,835 is: 590,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,411.02 : 923,556.28 = 427,835 : x
  2. Step 2: Convert to fraction form
    669,411.02/923,556.28 = 427,835/x
  3. Step 3: Cross multiply
    669,411.02x = 923,556.28 × 427,835
  4. Step 4: Simplify right side
    669,411.02x = 395,129,701,053.80
  5. Step 5: Solve for x
    x = 395,129,701,053.80/669,411.02
  6. Step 6: Final answer
    x = 590,264.71

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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.