Home / 825,124.32-1,236,728.66-312,463.58

Finding the Fourth Proportional to 825,124.32, 1,236,728.66 and 312,463.58

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Solution

The fourth proportional to 825,124.32, 1,236,728.66 and 312,463.58 is: 468,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,124.32 : 1,236,728.66 = 312,463.58 : x
  2. Step 2: Convert to fraction form
    825,124.32/1,236,728.66 = 312,463.58/x
  3. Step 3: Cross multiply
    825,124.32x = 1,236,728.66 × 312,463.58
  4. Step 4: Simplify right side
    825,124.32x = 386,432,656,846.24
  5. Step 5: Solve for x
    x = 386,432,656,846.24/825,124.32
  6. Step 6: Final answer
    x = 468,332.65

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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.