Home / 687,165.52-1,030,813.86-213,723.76

Finding the Fourth Proportional to 687,165.52, 1,030,813.86 and 213,723.76

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Solution

The fourth proportional to 687,165.52, 1,030,813.86 and 213,723.76 is: 320,606.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,165.52 : 1,030,813.86 = 213,723.76 : x
  2. Step 2: Convert to fraction form
    687,165.52/1,030,813.86 = 213,723.76/x
  3. Step 3: Cross multiply
    687,165.52x = 1,030,813.86 × 213,723.76
  4. Step 4: Simplify right side
    687,165.52x = 220,309,414,019.31
  5. Step 5: Solve for x
    x = 220,309,414,019.31/687,165.52
  6. Step 6: Final answer
    x = 320,606.04

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1.5x scale

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.