Home / 1,098,992.40-1,648,488.60-780,127.80

Finding the Fourth Proportional to 1,098,992.40, 1,648,488.60 and 780,127.80

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Solution

The fourth proportional to 1,098,992.40, 1,648,488.60 and 780,127.80 is: 1,170,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,992.40 : 1,648,488.60 = 780,127.80 : x
  2. Step 2: Convert to fraction form
    1,098,992.40/1,648,488.60 = 780,127.80/x
  3. Step 3: Cross multiply
    1,098,992.40x = 1,648,488.60 × 780,127.80
  4. Step 4: Simplify right side
    1,098,992.40x = 1,286,031,784,843.08
  5. Step 5: Solve for x
    x = 1,286,031,784,843.08/1,098,992.40
  6. Step 6: Final answer
    x = 1,170,191.70

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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.