Home / 809,324.10-1,213,986.15-778,220.10

Finding the Fourth Proportional to 809,324.10, 1,213,986.15 and 778,220.10

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Solution

The fourth proportional to 809,324.10, 1,213,986.15 and 778,220.10 is: 1,167,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,324.10 : 1,213,986.15 = 778,220.10 : x
  2. Step 2: Convert to fraction form
    809,324.10/1,213,986.15 = 778,220.10/x
  3. Step 3: Cross multiply
    809,324.10x = 1,213,986.15 × 778,220.10
  4. Step 4: Simplify right side
    809,324.10x = 944,748,423,051.62
  5. Step 5: Solve for x
    x = 944,748,423,051.62/809,324.10
  6. Step 6: Final answer
    x = 1,167,330.15

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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.