Home / 642,282.80-963,439.83-215,824.81

Finding the Fourth Proportional to 642,282.80, 963,439.83 and 215,824.81

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Solution

The fourth proportional to 642,282.80, 963,439.83 and 215,824.81 is: 323,742.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,282.80 : 963,439.83 = 215,824.81 : x
  2. Step 2: Convert to fraction form
    642,282.80/963,439.83 = 215,824.81/x
  3. Step 3: Cross multiply
    642,282.80x = 963,439.83 × 215,824.81
  4. Step 4: Simplify right side
    642,282.80x = 207,934,213,438.98
  5. Step 5: Solve for x
    x = 207,934,213,438.98/642,282.80
  6. Step 6: Final answer
    x = 323,742.46

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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.