Home / 3,918,980.80-5,408,783.76-2,391,975.28

Finding the Fourth Proportional to 3,918,980.80, 5,408,783.76 and 2,391,975.28

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Solution

The fourth proportional to 3,918,980.80, 5,408,783.76 and 2,391,975.28 is: 3,301,286.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918,980.80 : 5,408,783.76 = 2,391,975.28 : x
  2. Step 2: Convert to fraction form
    3,918,980.80/5,408,783.76 = 2,391,975.28/x
  3. Step 3: Cross multiply
    3,918,980.80x = 5,408,783.76 × 2,391,975.28
  4. Step 4: Simplify right side
    3,918,980.80x = 12,937,677,048,785.45
  5. Step 5: Solve for x
    x = 12,937,677,048,785.45/3,918,980.80
  6. Step 6: Final answer
    x = 3,301,286.15

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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.