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Finding the Fourth Proportional to 659,895.10, 989,842.65 and 659,895.10

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Solution

The fourth proportional to 659,895.10, 989,842.65 and 659,895.10 is: 989,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,895.10 : 989,842.65 = 659,895.10 : x
  2. Step 2: Convert to fraction form
    659,895.10/989,842.65 = 659,895.10/x
  3. Step 3: Cross multiply
    659,895.10x = 989,842.65 × 659,895.10
  4. Step 4: Simplify right side
    659,895.10x = 653,192,314,506.02
  5. Step 5: Solve for x
    x = 653,192,314,506.02/659,895.10
  6. Step 6: Final answer
    x = 989,842.65

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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.