Home / 1,420,165.20-2,131,457.40-579,320.40

Finding the Fourth Proportional to 1,420,165.20, 2,131,457.40 and 579,320.40

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Solution

The fourth proportional to 1,420,165.20, 2,131,457.40 and 579,320.40 is: 869,474.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,165.20 : 2,131,457.40 = 579,320.40 : x
  2. Step 2: Convert to fraction form
    1,420,165.20/2,131,457.40 = 579,320.40/x
  3. Step 3: Cross multiply
    1,420,165.20x = 2,131,457.40 × 579,320.40
  4. Step 4: Simplify right side
    1,420,165.20x = 1,234,796,753,550.96
  5. Step 5: Solve for x
    x = 1,234,796,753,550.96/1,420,165.20
  6. Step 6: Final answer
    x = 869,474.03

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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.