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Finding the Fourth Proportional to 869,007.80, 1,303,511.70 and 833,578.40

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Solution

The fourth proportional to 869,007.80, 1,303,511.70 and 833,578.40 is: 1,250,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,007.80 : 1,303,511.70 = 833,578.40 : x
  2. Step 2: Convert to fraction form
    869,007.80/1,303,511.70 = 833,578.40/x
  3. Step 3: Cross multiply
    869,007.80x = 1,303,511.70 × 833,578.40
  4. Step 4: Simplify right side
    869,007.80x = 1,086,579,197,267.28
  5. Step 5: Solve for x
    x = 1,086,579,197,267.28/869,007.80
  6. Step 6: Final answer
    x = 1,250,367.60

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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.