Home / 790,145.28-1,185,406.38-257,666.94

Finding the Fourth Proportional to 790,145.28, 1,185,406.38 and 257,666.94

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Solution

The fourth proportional to 790,145.28, 1,185,406.38 and 257,666.94 is: 386,561.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,145.28 : 1,185,406.38 = 257,666.94 : x
  2. Step 2: Convert to fraction form
    790,145.28/1,185,406.38 = 257,666.94/x
  3. Step 3: Cross multiply
    790,145.28x = 1,185,406.38 × 257,666.94
  4. Step 4: Simplify right side
    790,145.28x = 305,440,034,591.08
  5. Step 5: Solve for x
    x = 305,440,034,591.08/790,145.28
  6. Step 6: Final answer
    x = 386,561.87

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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.