Home / 7,121,432.45-9,827,563.48-3,858,328.28

Finding the Fourth Proportional to 7,121,432.45, 9,827,563.48 and 3,858,328.28

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Solution

The fourth proportional to 7,121,432.45, 9,827,563.48 and 3,858,328.28 is: 5,324,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121,432.45 : 9,827,563.48 = 3,858,328.28 : x
  2. Step 2: Convert to fraction form
    7,121,432.45/9,827,563.48 = 3,858,328.28/x
  3. Step 3: Cross multiply
    7,121,432.45x = 9,827,563.48 × 3,858,328.28
  4. Step 4: Simplify right side
    7,121,432.45x = 37,917,966,039,595.57
  5. Step 5: Solve for x
    x = 37,917,966,039,595.57/7,121,432.45
  6. Step 6: Final answer
    x = 5,324,485.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.