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Finding the Fourth Proportional to 659,894.10, 989,841.15 and 659,894.10

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Solution

The fourth proportional to 659,894.10, 989,841.15 and 659,894.10 is: 989,841.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,894.10 : 989,841.15 = 659,894.10 : x
  2. Step 2: Convert to fraction form
    659,894.10/989,841.15 = 659,894.10/x
  3. Step 3: Cross multiply
    659,894.10x = 989,841.15 × 659,894.10
  4. Step 4: Simplify right side
    659,894.10x = 653,190,334,822.22
  5. Step 5: Solve for x
    x = 653,190,334,822.22/659,894.10
  6. Step 6: Final answer
    x = 989,841.15

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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.