Home / 777,765.50-1,073,316.80-420,069.50

Finding the Fourth Proportional to 777,765.50, 1,073,316.80 and 420,069.50

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Solution

The fourth proportional to 777,765.50, 1,073,316.80 and 420,069.50 is: 579,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,765.50 : 1,073,316.80 = 420,069.50 : x
  2. Step 2: Convert to fraction form
    777,765.50/1,073,316.80 = 420,069.50/x
  3. Step 3: Cross multiply
    777,765.50x = 1,073,316.80 × 420,069.50
  4. Step 4: Simplify right side
    777,765.50x = 450,867,651,517.60
  5. Step 5: Solve for x
    x = 450,867,651,517.60/777,765.50
  6. Step 6: Final answer
    x = 579,696.13

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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.