Home / 5,423,999.40-8,135,999.10-1,380,479.40

Finding the Fourth Proportional to 5,423,999.40, 8,135,999.10 and 1,380,479.40

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Solution

The fourth proportional to 5,423,999.40, 8,135,999.10 and 1,380,479.40 is: 2,070,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423,999.40 : 8,135,999.10 = 1,380,479.40 : x
  2. Step 2: Convert to fraction form
    5,423,999.40/8,135,999.10 = 1,380,479.40/x
  3. Step 3: Cross multiply
    5,423,999.40x = 8,135,999.10 × 1,380,479.40
  4. Step 4: Simplify right side
    5,423,999.40x = 11,231,579,155,968.54
  5. Step 5: Solve for x
    x = 11,231,579,155,968.54/5,423,999.40
  6. Step 6: Final answer
    x = 2,070,719.10

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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.