Home / 767,909.88-1,059,744.48-428,443.68

Finding the Fourth Proportional to 767,909.88, 1,059,744.48 and 428,443.68

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Solution

The fourth proportional to 767,909.88, 1,059,744.48 and 428,443.68 is: 591,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,909.88 : 1,059,744.48 = 428,443.68 : x
  2. Step 2: Convert to fraction form
    767,909.88/1,059,744.48 = 428,443.68/x
  3. Step 3: Cross multiply
    767,909.88x = 1,059,744.48 × 428,443.68
  4. Step 4: Simplify right side
    767,909.88x = 454,040,824,870.89
  5. Step 5: Solve for x
    x = 454,040,824,870.89/767,909.88
  6. Step 6: Final answer
    x = 591,268.37

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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.