Home / 1,215,115.20-1,820,485.80-964,047.60

Finding the Fourth Proportional to 1,215,115.20, 1,820,485.80 and 964,047.60

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Solution

The fourth proportional to 1,215,115.20, 1,820,485.80 and 964,047.60 is: 1,444,336.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,115.20 : 1,820,485.80 = 964,047.60 : x
  2. Step 2: Convert to fraction form
    1,215,115.20/1,820,485.80 = 964,047.60/x
  3. Step 3: Cross multiply
    1,215,115.20x = 1,820,485.80 × 964,047.60
  4. Step 4: Simplify right side
    1,215,115.20x = 1,755,034,966,324.08
  5. Step 5: Solve for x
    x = 1,755,034,966,324.08/1,215,115.20
  6. Step 6: Final answer
    x = 1,444,336.28

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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.