Home / 777,078.11-1,072,527.32-490,405.79

Finding the Fourth Proportional to 777,078.11, 1,072,527.32 and 490,405.79

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Solution

The fourth proportional to 777,078.11, 1,072,527.32 and 490,405.79 is: 676,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,078.11 : 1,072,527.32 = 490,405.79 : x
  2. Step 2: Convert to fraction form
    777,078.11/1,072,527.32 = 490,405.79/x
  3. Step 3: Cross multiply
    777,078.11x = 1,072,527.32 × 490,405.79
  4. Step 4: Simplify right side
    777,078.11x = 525,973,605,209.15
  5. Step 5: Solve for x
    x = 525,973,605,209.15/777,078.11
  6. Step 6: Final answer
    x = 676,860.66

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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.