Home / 913,643.70-1,260,812.94-505,736.76

Finding the Fourth Proportional to 913,643.70, 1,260,812.94 and 505,736.76

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Solution

The fourth proportional to 913,643.70, 1,260,812.94 and 505,736.76 is: 697,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,643.70 : 1,260,812.94 = 505,736.76 : x
  2. Step 2: Convert to fraction form
    913,643.70/1,260,812.94 = 505,736.76/x
  3. Step 3: Cross multiply
    913,643.70x = 1,260,812.94 × 505,736.76
  4. Step 4: Simplify right side
    913,643.70x = 637,639,451,241.68
  5. Step 5: Solve for x
    x = 637,639,451,241.68/913,643.70
  6. Step 6: Final answer
    x = 697,908.22

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1.5x scale

Why These Related Problems?

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