Home / 809,755.47-1,215,370.35-430,994.25

Finding the Fourth Proportional to 809,755.47, 1,215,370.35 and 430,994.25

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Solution

The fourth proportional to 809,755.47, 1,215,370.35 and 430,994.25 is: 646,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,755.47 : 1,215,370.35 = 430,994.25 : x
  2. Step 2: Convert to fraction form
    809,755.47/1,215,370.35 = 430,994.25/x
  3. Step 3: Cross multiply
    809,755.47x = 1,215,370.35 × 430,994.25
  4. Step 4: Simplify right side
    809,755.47x = 523,817,632,470.49
  5. Step 5: Solve for x
    x = 523,817,632,470.49/809,755.47
  6. Step 6: Final answer
    x = 646,883.72

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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.