Home / 1,211,125.40-1,815,132.90-929,245.40

Finding the Fourth Proportional to 1,211,125.40, 1,815,132.90 and 929,245.40

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Solution

The fourth proportional to 1,211,125.40, 1,815,132.90 and 929,245.40 is: 1,392,674.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,125.40 : 1,815,132.90 = 929,245.40 : x
  2. Step 2: Convert to fraction form
    1,211,125.40/1,815,132.90 = 929,245.40/x
  3. Step 3: Cross multiply
    1,211,125.40x = 1,815,132.90 × 929,245.40
  4. Step 4: Simplify right side
    1,211,125.40x = 1,686,703,897,713.66
  5. Step 5: Solve for x
    x = 1,686,703,897,713.66/1,211,125.40
  6. Step 6: Final answer
    x = 1,392,674.86

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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.