Home / 777,766.50-1,073,318.18-420,070.50

Finding the Fourth Proportional to 777,766.50, 1,073,318.18 and 420,070.50

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Solution

The fourth proportional to 777,766.50, 1,073,318.18 and 420,070.50 is: 579,697.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,766.50 : 1,073,318.18 = 420,070.50 : x
  2. Step 2: Convert to fraction form
    777,766.50/1,073,318.18 = 420,070.50/x
  3. Step 3: Cross multiply
    777,766.50x = 1,073,318.18 × 420,070.50
  4. Step 4: Simplify right side
    777,766.50x = 450,869,304,531.69
  5. Step 5: Solve for x
    x = 450,869,304,531.69/777,766.50
  6. Step 6: Final answer
    x = 579,697.51

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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.