Home / 1,281,387.64-1,768,021.68-765,041.26

Finding the Fourth Proportional to 1,281,387.64, 1,768,021.68 and 765,041.26

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Solution

The fourth proportional to 1,281,387.64, 1,768,021.68 and 765,041.26 is: 1,055,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,387.64 : 1,768,021.68 = 765,041.26 : x
  2. Step 2: Convert to fraction form
    1,281,387.64/1,768,021.68 = 765,041.26/x
  3. Step 3: Cross multiply
    1,281,387.64x = 1,768,021.68 × 765,041.26
  4. Step 4: Simplify right side
    1,281,387.64x = 1,352,609,533,774.52
  5. Step 5: Solve for x
    x = 1,352,609,533,774.52/1,281,387.64
  6. Step 6: Final answer
    x = 1,055,581.85

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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.