Home / 866,176.90-1,298,390.55-393,201.70

Finding the Fourth Proportional to 866,176.90, 1,298,390.55 and 393,201.70

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Solution

The fourth proportional to 866,176.90, 1,298,390.55 and 393,201.70 is: 589,405.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,176.90 : 1,298,390.55 = 393,201.70 : x
  2. Step 2: Convert to fraction form
    866,176.90/1,298,390.55 = 393,201.70/x
  3. Step 3: Cross multiply
    866,176.90x = 1,298,390.55 × 393,201.70
  4. Step 4: Simplify right side
    866,176.90x = 510,529,371,523.94
  5. Step 5: Solve for x
    x = 510,529,371,523.94/866,176.90
  6. Step 6: Final answer
    x = 589,405.43

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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.