Home / 699,990.51-1,049,985.77-400,260.84

Finding the Fourth Proportional to 699,990.51, 1,049,985.77 and 400,260.84

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Solution

The fourth proportional to 699,990.51, 1,049,985.77 and 400,260.84 is: 600,391.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,990.51 : 1,049,985.77 = 400,260.84 : x
  2. Step 2: Convert to fraction form
    699,990.51/1,049,985.77 = 400,260.84/x
  3. Step 3: Cross multiply
    699,990.51x = 1,049,985.77 × 400,260.84
  4. Step 4: Simplify right side
    699,990.51x = 420,268,186,288.25
  5. Step 5: Solve for x
    x = 420,268,186,288.25/699,990.51
  6. Step 6: Final answer
    x = 600,391.26

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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.