Home / 811,749.79-1,217,611.93-279,275.43

Finding the Fourth Proportional to 811,749.79, 1,217,611.93 and 279,275.43

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Solution

The fourth proportional to 811,749.79, 1,217,611.93 and 279,275.43 is: 418,908.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,749.79 : 1,217,611.93 = 279,275.43 : x
  2. Step 2: Convert to fraction form
    811,749.79/1,217,611.93 = 279,275.43/x
  3. Step 3: Cross multiply
    811,749.79x = 1,217,611.93 × 279,275.43
  4. Step 4: Simplify right side
    811,749.79x = 340,049,095,323.88
  5. Step 5: Solve for x
    x = 340,049,095,323.88/811,749.79
  6. Step 6: Final answer
    x = 418,908.76

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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.