Home / 1,313,100.68-1,812,078.40-709,488.68

Finding the Fourth Proportional to 1,313,100.68, 1,812,078.40 and 709,488.68

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Solution

The fourth proportional to 1,313,100.68, 1,812,078.40 and 709,488.68 is: 979,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,100.68 : 1,812,078.40 = 709,488.68 : x
  2. Step 2: Convert to fraction form
    1,313,100.68/1,812,078.40 = 709,488.68/x
  3. Step 3: Cross multiply
    1,313,100.68x = 1,812,078.40 × 709,488.68
  4. Step 4: Simplify right side
    1,313,100.68x = 1,285,649,112,072.51
  5. Step 5: Solve for x
    x = 1,285,649,112,072.51/1,313,100.68
  6. Step 6: Final answer
    x = 979,094.09

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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.