Home / 1,278,382.37-1,918,306.20-520,083.86

Finding the Fourth Proportional to 1,278,382.37, 1,918,306.20 and 520,083.86

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Solution

The fourth proportional to 1,278,382.37, 1,918,306.20 and 520,083.86 is: 780,423.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,382.37 : 1,918,306.20 = 520,083.86 : x
  2. Step 2: Convert to fraction form
    1,278,382.37/1,918,306.20 = 520,083.86/x
  3. Step 3: Cross multiply
    1,278,382.37x = 1,918,306.20 × 520,083.86
  4. Step 4: Simplify right side
    1,278,382.37x = 997,680,083,566.40
  5. Step 5: Solve for x
    x = 997,680,083,566.40/1,278,382.37
  6. Step 6: Final answer
    x = 780,423.85

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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.