Home / 1,169,135.20-1,753,702.80-420,911.20

Finding the Fourth Proportional to 1,169,135.20, 1,753,702.80 and 420,911.20

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Solution

The fourth proportional to 1,169,135.20, 1,753,702.80 and 420,911.20 is: 631,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169,135.20 : 1,753,702.80 = 420,911.20 : x
  2. Step 2: Convert to fraction form
    1,169,135.20/1,753,702.80 = 420,911.20/x
  3. Step 3: Cross multiply
    1,169,135.20x = 1,753,702.80 × 420,911.20
  4. Step 4: Simplify right side
    1,169,135.20x = 738,153,149,991.36
  5. Step 5: Solve for x
    x = 738,153,149,991.36/1,169,135.20
  6. Step 6: Final answer
    x = 631,366.80

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Double scale
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Similar ratio
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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.