Home / 1,214,457.80-1,821,686.70-859,872.20

Finding the Fourth Proportional to 1,214,457.80, 1,821,686.70 and 859,872.20

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Solution

The fourth proportional to 1,214,457.80, 1,821,686.70 and 859,872.20 is: 1,289,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,457.80 : 1,821,686.70 = 859,872.20 : x
  2. Step 2: Convert to fraction form
    1,214,457.80/1,821,686.70 = 859,872.20/x
  3. Step 3: Cross multiply
    1,214,457.80x = 1,821,686.70 × 859,872.20
  4. Step 4: Simplify right side
    1,214,457.80x = 1,566,417,750,439.74
  5. Step 5: Solve for x
    x = 1,566,417,750,439.74/1,214,457.80
  6. Step 6: Final answer
    x = 1,289,808.30

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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.