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Finding the Fourth Proportional to 659,898.60, 989,847.90 and 659,898.60

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Solution

The fourth proportional to 659,898.60, 989,847.90 and 659,898.60 is: 989,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,898.60 : 989,847.90 = 659,898.60 : x
  2. Step 2: Convert to fraction form
    659,898.60/989,847.90 = 659,898.60/x
  3. Step 3: Cross multiply
    659,898.60x = 989,847.90 × 659,898.60
  4. Step 4: Simplify right side
    659,898.60x = 653,199,243,422.94
  5. Step 5: Solve for x
    x = 653,199,243,422.94/659,898.60
  6. Step 6: Final answer
    x = 989,847.90

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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.