Home / 1,260,866.60-1,891,559.10-420,021.80

Finding the Fourth Proportional to 1,260,866.60, 1,891,559.10 and 420,021.80

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Solution

The fourth proportional to 1,260,866.60, 1,891,559.10 and 420,021.80 is: 630,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,866.60 : 1,891,559.10 = 420,021.80 : x
  2. Step 2: Convert to fraction form
    1,260,866.60/1,891,559.10 = 420,021.80/x
  3. Step 3: Cross multiply
    1,260,866.60x = 1,891,559.10 × 420,021.80
  4. Step 4: Simplify right side
    1,260,866.60x = 794,496,057,988.38
  5. Step 5: Solve for x
    x = 794,496,057,988.38/1,260,866.60
  6. Step 6: Final answer
    x = 630,119.05

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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.