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Finding the Fourth Proportional to 493,604.20, 689,646.20 and 493,604.20

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Solution

The fourth proportional to 493,604.20, 689,646.20 and 493,604.20 is: 689,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,604.20 : 689,646.20 = 493,604.20 : x
  2. Step 2: Convert to fraction form
    493,604.20/689,646.20 = 493,604.20/x
  3. Step 3: Cross multiply
    493,604.20x = 689,646.20 × 493,604.20
  4. Step 4: Simplify right side
    493,604.20x = 340,412,260,834.04
  5. Step 5: Solve for x
    x = 340,412,260,834.04/493,604.20
  6. Step 6: Final answer
    x = 689,646.20

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1.5x scale

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.