Home / 825,126.32-1,236,731.65-312,465.58

Finding the Fourth Proportional to 825,126.32, 1,236,731.65 and 312,465.58

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Solution

The fourth proportional to 825,126.32, 1,236,731.65 and 312,465.58 is: 468,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,126.32 : 1,236,731.65 = 312,465.58 : x
  2. Step 2: Convert to fraction form
    825,126.32/1,236,731.65 = 312,465.58/x
  3. Step 3: Cross multiply
    825,126.32x = 1,236,731.65 × 312,465.58
  4. Step 4: Simplify right side
    825,126.32x = 386,436,072,321.61
  5. Step 5: Solve for x
    x = 386,436,072,321.61/825,126.32
  6. Step 6: Final answer
    x = 468,335.65

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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.