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Finding the Fourth Proportional to 689,569.80, 1,032,021.90 and 689,569.80

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Solution

The fourth proportional to 689,569.80, 1,032,021.90 and 689,569.80 is: 1,032,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,569.80 : 1,032,021.90 = 689,569.80 : x
  2. Step 2: Convert to fraction form
    689,569.80/1,032,021.90 = 689,569.80/x
  3. Step 3: Cross multiply
    689,569.80x = 1,032,021.90 × 689,569.80
  4. Step 4: Simplify right side
    689,569.80x = 711,651,135,178.62
  5. Step 5: Solve for x
    x = 711,651,135,178.62/689,569.80
  6. Step 6: Final answer
    x = 1,032,021.90

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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.