Home / 1,313,588.40-1,812,755.20-709,976.40

Finding the Fourth Proportional to 1,313,588.40, 1,812,755.20 and 709,976.40

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Solution

The fourth proportional to 1,313,588.40, 1,812,755.20 and 709,976.40 is: 979,769.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,588.40 : 1,812,755.20 = 709,976.40 : x
  2. Step 2: Convert to fraction form
    1,313,588.40/1,812,755.20 = 709,976.40/x
  3. Step 3: Cross multiply
    1,313,588.40x = 1,812,755.20 × 709,976.40
  4. Step 4: Simplify right side
    1,313,588.40x = 1,287,013,410,977.28
  5. Step 5: Solve for x
    x = 1,287,013,410,977.28/1,313,588.40
  6. Step 6: Final answer
    x = 979,769.17

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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.