Home / 1,107,416.40-1,661,124.60-1,086,421.20

Finding the Fourth Proportional to 1,107,416.40, 1,661,124.60 and 1,086,421.20

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Solution

The fourth proportional to 1,107,416.40, 1,661,124.60 and 1,086,421.20 is: 1,629,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,416.40 : 1,661,124.60 = 1,086,421.20 : x
  2. Step 2: Convert to fraction form
    1,107,416.40/1,661,124.60 = 1,086,421.20/x
  3. Step 3: Cross multiply
    1,107,416.40x = 1,661,124.60 × 1,086,421.20
  4. Step 4: Simplify right side
    1,107,416.40x = 1,804,680,981,281.52
  5. Step 5: Solve for x
    x = 1,804,680,981,281.52/1,107,416.40
  6. Step 6: Final answer
    x = 1,629,631.80

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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.