Home / 1,260,865.60-1,891,557.60-420,020.80

Finding the Fourth Proportional to 1,260,865.60, 1,891,557.60 and 420,020.80

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Solution

The fourth proportional to 1,260,865.60, 1,891,557.60 and 420,020.80 is: 630,117.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,865.60 : 1,891,557.60 = 420,020.80 : x
  2. Step 2: Convert to fraction form
    1,260,865.60/1,891,557.60 = 420,020.80/x
  3. Step 3: Cross multiply
    1,260,865.60x = 1,891,557.60 × 420,020.80
  4. Step 4: Simplify right side
    1,260,865.60x = 794,493,536,398.08
  5. Step 5: Solve for x
    x = 794,493,536,398.08/1,260,865.60
  6. Step 6: Final answer
    x = 630,117.54

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1.5x scale

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.