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Finding the Fourth Proportional to 495,816.72, 684,556.56 and 380,890.68

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Solution

The fourth proportional to 495,816.72, 684,556.56 and 380,890.68 is: 525,882.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,816.72 : 684,556.56 = 380,890.68 : x
  2. Step 2: Convert to fraction form
    495,816.72/684,556.56 = 380,890.68/x
  3. Step 3: Cross multiply
    495,816.72x = 684,556.56 × 380,890.68
  4. Step 4: Simplify right side
    495,816.72x = 260,741,213,636.86
  5. Step 5: Solve for x
    x = 260,741,213,636.86/495,816.72
  6. Step 6: Final answer
    x = 525,882.25

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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.