Home / 687,846.30-1,031,769.45-214,530.90

Finding the Fourth Proportional to 687,846.30, 1,031,769.45 and 214,530.90

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Solution

The fourth proportional to 687,846.30, 1,031,769.45 and 214,530.90 is: 321,796.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,846.30 : 1,031,769.45 = 214,530.90 : x
  2. Step 2: Convert to fraction form
    687,846.30/1,031,769.45 = 214,530.90/x
  3. Step 3: Cross multiply
    687,846.30x = 1,031,769.45 × 214,530.90
  4. Step 4: Simplify right side
    687,846.30x = 221,346,428,701.01
  5. Step 5: Solve for x
    x = 221,346,428,701.01/687,846.30
  6. Step 6: Final answer
    x = 321,796.35

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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.