Home / 788,249.78-1,087,961.88-516,159.64

Finding the Fourth Proportional to 788,249.78, 1,087,961.88 and 516,159.64

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Solution

The fourth proportional to 788,249.78, 1,087,961.88 and 516,159.64 is: 712,416.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,249.78 : 1,087,961.88 = 516,159.64 : x
  2. Step 2: Convert to fraction form
    788,249.78/1,087,961.88 = 516,159.64/x
  3. Step 3: Cross multiply
    788,249.78x = 1,087,961.88 × 516,159.64
  4. Step 4: Simplify right side
    788,249.78x = 561,562,012,314.52
  5. Step 5: Solve for x
    x = 561,562,012,314.52/788,249.78
  6. Step 6: Final answer
    x = 712,416.33

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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.