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Finding the Fourth Proportional to 998,554.40, 1,496,276.40 and 864,807.20

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Solution

The fourth proportional to 998,554.40, 1,496,276.40 and 864,807.20 is: 1,295,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,554.40 : 1,496,276.40 = 864,807.20 : x
  2. Step 2: Convert to fraction form
    998,554.40/1,496,276.40 = 864,807.20/x
  3. Step 3: Cross multiply
    998,554.40x = 1,496,276.40 × 864,807.20
  4. Step 4: Simplify right side
    998,554.40x = 1,293,990,603,910.08
  5. Step 5: Solve for x
    x = 1,293,990,603,910.08/998,554.40
  6. Step 6: Final answer
    x = 1,295,863.90

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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.