Home / 1,306,835.12-1,960,009.68-408,298.88

Finding the Fourth Proportional to 1,306,835.12, 1,960,009.68 and 408,298.88

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Solution

The fourth proportional to 1,306,835.12, 1,960,009.68 and 408,298.88 is: 612,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,835.12 : 1,960,009.68 = 408,298.88 : x
  2. Step 2: Convert to fraction form
    1,306,835.12/1,960,009.68 = 408,298.88/x
  3. Step 3: Cross multiply
    1,306,835.12x = 1,960,009.68 × 408,298.88
  4. Step 4: Simplify right side
    1,306,835.12x = 800,269,757,133.16
  5. Step 5: Solve for x
    x = 800,269,757,133.16/1,306,835.12
  6. Step 6: Final answer
    x = 612,372.40

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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.