Home / 687,172.68-1,030,824.63-213,730.92

Finding the Fourth Proportional to 687,172.68, 1,030,824.63 and 213,730.92

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Solution

The fourth proportional to 687,172.68, 1,030,824.63 and 213,730.92 is: 320,616.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,172.68 : 1,030,824.63 = 213,730.92 : x
  2. Step 2: Convert to fraction form
    687,172.68/1,030,824.63 = 213,730.92/x
  3. Step 3: Cross multiply
    687,172.68x = 1,030,824.63 × 213,730.92
  4. Step 4: Simplify right side
    687,172.68x = 220,319,096,528.56
  5. Step 5: Solve for x
    x = 220,319,096,528.56/687,172.68
  6. Step 6: Final answer
    x = 320,616.79

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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.