Home / 1,078,400.76-1,617,642.46-279,661.40

Finding the Fourth Proportional to 1,078,400.76, 1,617,642.46 and 279,661.40

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Solution

The fourth proportional to 1,078,400.76, 1,617,642.46 and 279,661.40 is: 419,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,400.76 : 1,617,642.46 = 279,661.40 : x
  2. Step 2: Convert to fraction form
    1,078,400.76/1,617,642.46 = 279,661.40/x
  3. Step 3: Cross multiply
    1,078,400.76x = 1,617,642.46 × 279,661.40
  4. Step 4: Simplify right side
    1,078,400.76x = 452,392,155,063.04
  5. Step 5: Solve for x
    x = 452,392,155,063.04/1,078,400.76
  6. Step 6: Final answer
    x = 419,502.82

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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.