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Finding the Fourth Proportional to 493,577.70, 689,609.10 and 493,577.70

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Solution

The fourth proportional to 493,577.70, 689,609.10 and 493,577.70 is: 689,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,577.70 : 689,609.10 = 493,577.70 : x
  2. Step 2: Convert to fraction form
    493,577.70/689,609.10 = 493,577.70/x
  3. Step 3: Cross multiply
    493,577.70x = 689,609.10 × 493,577.70
  4. Step 4: Simplify right side
    493,577.70x = 340,375,673,477.07
  5. Step 5: Solve for x
    x = 340,375,673,477.07/493,577.70
  6. Step 6: Final answer
    x = 689,609.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.