Home / 814,231.70-1,221,347.55-802,421.90

Finding the Fourth Proportional to 814,231.70, 1,221,347.55 and 802,421.90

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Solution

The fourth proportional to 814,231.70, 1,221,347.55 and 802,421.90 is: 1,203,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,231.70 : 1,221,347.55 = 802,421.90 : x
  2. Step 2: Convert to fraction form
    814,231.70/1,221,347.55 = 802,421.90/x
  3. Step 3: Cross multiply
    814,231.70x = 1,221,347.55 × 802,421.90
  4. Step 4: Simplify right side
    814,231.70x = 980,036,021,631.35
  5. Step 5: Solve for x
    x = 980,036,021,631.35/814,231.70
  6. Step 6: Final answer
    x = 1,203,632.85

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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.