Home / 879,186.34-1,318,765.12-280,139.40

Finding the Fourth Proportional to 879,186.34, 1,318,765.12 and 280,139.40

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Solution

The fourth proportional to 879,186.34, 1,318,765.12 and 280,139.40 is: 420,204.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,186.34 : 1,318,765.12 = 280,139.40 : x
  2. Step 2: Convert to fraction form
    879,186.34/1,318,765.12 = 280,139.40/x
  3. Step 3: Cross multiply
    879,186.34x = 1,318,765.12 × 280,139.40
  4. Step 4: Simplify right side
    879,186.34x = 369,438,068,757.38
  5. Step 5: Solve for x
    x = 369,438,068,757.38/879,186.34
  6. Step 6: Final answer
    x = 420,204.51

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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.