Home / 3,987,127.80-5,980,691.70-2,790,401.40

Finding the Fourth Proportional to 3,987,127.80, 5,980,691.70 and 2,790,401.40

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Solution

The fourth proportional to 3,987,127.80, 5,980,691.70 and 2,790,401.40 is: 4,185,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,127.80 : 5,980,691.70 = 2,790,401.40 : x
  2. Step 2: Convert to fraction form
    3,987,127.80/5,980,691.70 = 2,790,401.40/x
  3. Step 3: Cross multiply
    3,987,127.80x = 5,980,691.70 × 2,790,401.40
  4. Step 4: Simplify right side
    3,987,127.80x = 16,688,530,492,648.38
  5. Step 5: Solve for x
    x = 16,688,530,492,648.38/3,987,127.80
  6. Step 6: Final answer
    x = 4,185,602.10

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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.