Home / 1,319,145.30-1,978,717.95-321,873.30

Finding the Fourth Proportional to 1,319,145.30, 1,978,717.95 and 321,873.30

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Solution

The fourth proportional to 1,319,145.30, 1,978,717.95 and 321,873.30 is: 482,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,145.30 : 1,978,717.95 = 321,873.30 : x
  2. Step 2: Convert to fraction form
    1,319,145.30/1,978,717.95 = 321,873.30/x
  3. Step 3: Cross multiply
    1,319,145.30x = 1,978,717.95 × 321,873.30
  4. Step 4: Simplify right side
    1,319,145.30x = 636,896,476,335.74
  5. Step 5: Solve for x
    x = 636,896,476,335.74/1,319,145.30
  6. Step 6: Final answer
    x = 482,809.95

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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.