Home / 809,326.60-1,213,989.90-778,222.60

Finding the Fourth Proportional to 809,326.60, 1,213,989.90 and 778,222.60

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Solution

The fourth proportional to 809,326.60, 1,213,989.90 and 778,222.60 is: 1,167,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,326.60 : 1,213,989.90 = 778,222.60 : x
  2. Step 2: Convert to fraction form
    809,326.60/1,213,989.90 = 778,222.60/x
  3. Step 3: Cross multiply
    809,326.60x = 1,213,989.90 × 778,222.60
  4. Step 4: Simplify right side
    809,326.60x = 944,754,376,351.74
  5. Step 5: Solve for x
    x = 944,754,376,351.74/809,326.60
  6. Step 6: Final answer
    x = 1,167,333.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.