Home / 785,735.34-1,178,689.95-280,414.14

Finding the Fourth Proportional to 785,735.34, 1,178,689.95 and 280,414.14

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Solution

The fourth proportional to 785,735.34, 1,178,689.95 and 280,414.14 is: 420,652.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,735.34 : 1,178,689.95 = 280,414.14 : x
  2. Step 2: Convert to fraction form
    785,735.34/1,178,689.95 = 280,414.14/x
  3. Step 3: Cross multiply
    785,735.34x = 1,178,689.95 × 280,414.14
  4. Step 4: Simplify right side
    785,735.34x = 330,521,328,655.89
  5. Step 5: Solve for x
    x = 330,521,328,655.89/785,735.34
  6. Step 6: Final answer
    x = 420,652.24

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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.