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Finding the Fourth Proportional to 455,838.20, 684,923.70 and 404,516.60

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Solution

The fourth proportional to 455,838.20, 684,923.70 and 404,516.60 is: 607,809.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,838.20 : 684,923.70 = 404,516.60 : x
  2. Step 2: Convert to fraction form
    455,838.20/684,923.70 = 404,516.60/x
  3. Step 3: Cross multiply
    455,838.20x = 684,923.70 × 404,516.60
  4. Step 4: Simplify right side
    455,838.20x = 277,063,006,383.42
  5. Step 5: Solve for x
    x = 277,063,006,383.42/455,838.20
  6. Step 6: Final answer
    x = 607,809.98

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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.