Home / 1,214,005.20-1,821,007.80-372,447.60

Finding the Fourth Proportional to 1,214,005.20, 1,821,007.80 and 372,447.60

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Solution

The fourth proportional to 1,214,005.20, 1,821,007.80 and 372,447.60 is: 558,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,005.20 : 1,821,007.80 = 372,447.60 : x
  2. Step 2: Convert to fraction form
    1,214,005.20/1,821,007.80 = 372,447.60/x
  3. Step 3: Cross multiply
    1,214,005.20x = 1,821,007.80 × 372,447.60
  4. Step 4: Simplify right side
    1,214,005.20x = 678,229,984,691.28
  5. Step 5: Solve for x
    x = 678,229,984,691.28/1,214,005.20
  6. Step 6: Final answer
    x = 558,671.40

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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.