Home / 1,276,969.80-1,915,244.88-518,780.64

Finding the Fourth Proportional to 1,276,969.80, 1,915,244.88 and 518,780.64

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Solution

The fourth proportional to 1,276,969.80, 1,915,244.88 and 518,780.64 is: 778,085.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,969.80 : 1,915,244.88 = 518,780.64 : x
  2. Step 2: Convert to fraction form
    1,276,969.80/1,915,244.88 = 518,780.64/x
  3. Step 3: Cross multiply
    1,276,969.80x = 1,915,244.88 × 518,780.64
  4. Step 4: Simplify right side
    1,276,969.80x = 993,591,964,603.12
  5. Step 5: Solve for x
    x = 993,591,964,603.12/1,276,969.80
  6. Step 6: Final answer
    x = 778,085.72

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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.