Home / 922,078.80-1,383,118.20-638,643.60

Finding the Fourth Proportional to 922,078.80, 1,383,118.20 and 638,643.60

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Solution

The fourth proportional to 922,078.80, 1,383,118.20 and 638,643.60 is: 957,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,078.80 : 1,383,118.20 = 638,643.60 : x
  2. Step 2: Convert to fraction form
    922,078.80/1,383,118.20 = 638,643.60/x
  3. Step 3: Cross multiply
    922,078.80x = 1,383,118.20 × 638,643.60
  4. Step 4: Simplify right side
    922,078.80x = 883,319,586,473.52
  5. Step 5: Solve for x
    x = 883,319,586,473.52/922,078.80
  6. Step 6: Final answer
    x = 957,965.40

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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.