Home / 2,115,089.47-2,918,515.47-1,209,496.51

Finding the Fourth Proportional to 2,115,089.47, 2,918,515.47 and 1,209,496.51

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Solution

The fourth proportional to 2,115,089.47, 2,918,515.47 and 1,209,496.51 is: 1,668,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,089.47 : 2,918,515.47 = 1,209,496.51 : x
  2. Step 2: Convert to fraction form
    2,115,089.47/2,918,515.47 = 1,209,496.51/x
  3. Step 3: Cross multiply
    2,115,089.47x = 2,918,515.47 × 1,209,496.51
  4. Step 4: Simplify right side
    2,115,089.47x = 3,529,934,275,346.01
  5. Step 5: Solve for x
    x = 3,529,934,275,346.01/2,115,089.47
  6. Step 6: Final answer
    x = 1,668,929.06

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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.