Home / 778,126.84-1,073,815.04-420,430.84

Finding the Fourth Proportional to 778,126.84, 1,073,815.04 and 420,430.84

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Solution

The fourth proportional to 778,126.84, 1,073,815.04 and 420,430.84 is: 580,194.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,126.84 : 1,073,815.04 = 420,430.84 : x
  2. Step 2: Convert to fraction form
    778,126.84/1,073,815.04 = 420,430.84/x
  3. Step 3: Cross multiply
    778,126.84x = 1,073,815.04 × 420,430.84
  4. Step 4: Simplify right side
    778,126.84x = 451,464,959,271.83
  5. Step 5: Solve for x
    x = 451,464,959,271.83/778,126.84
  6. Step 6: Final answer
    x = 580,194.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.