Home / 1,421,490.72-2,131,455.12-700,245.40

Finding the Fourth Proportional to 1,421,490.72, 2,131,455.12 and 700,245.40

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Solution

The fourth proportional to 1,421,490.72, 2,131,455.12 and 700,245.40 is: 1,049,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,490.72 : 2,131,455.12 = 700,245.40 : x
  2. Step 2: Convert to fraction form
    1,421,490.72/2,131,455.12 = 700,245.40/x
  3. Step 3: Cross multiply
    1,421,490.72x = 2,131,455.12 × 700,245.40
  4. Step 4: Simplify right side
    1,421,490.72x = 1,492,541,643,086.45
  5. Step 5: Solve for x
    x = 1,492,541,643,086.45/1,421,490.72
  6. Step 6: Final answer
    x = 1,049,983.39

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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.