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Finding the Fourth Proportional to 612,358.45, 916,812.37 and 462,121.27

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Solution

The fourth proportional to 612,358.45, 916,812.37 and 462,121.27 is: 691,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,358.45 : 916,812.37 = 462,121.27 : x
  2. Step 2: Convert to fraction form
    612,358.45/916,812.37 = 462,121.27/x
  3. Step 3: Cross multiply
    612,358.45x = 916,812.37 × 462,121.27
  4. Step 4: Simplify right side
    612,358.45x = 423,678,496,776.11
  5. Step 5: Solve for x
    x = 423,678,496,776.11/612,358.45
  6. Step 6: Final answer
    x = 691,879.89

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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.