Home / 807,420.15-1,211,158.71-427,827.96

Finding the Fourth Proportional to 807,420.15, 1,211,158.71 and 427,827.96

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Solution

The fourth proportional to 807,420.15, 1,211,158.71 and 427,827.96 is: 641,757.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,420.15 : 1,211,158.71 = 427,827.96 : x
  2. Step 2: Convert to fraction form
    807,420.15/1,211,158.71 = 427,827.96/x
  3. Step 3: Cross multiply
    807,420.15x = 1,211,158.71 × 427,827.96
  4. Step 4: Simplify right side
    807,420.15x = 518,167,560,135.53
  5. Step 5: Solve for x
    x = 518,167,560,135.53/807,420.15
  6. Step 6: Final answer
    x = 641,757.03

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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.