Home / 684,080.40-1,026,120.60-210,910.80

Finding the Fourth Proportional to 684,080.40, 1,026,120.60 and 210,910.80

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Solution

The fourth proportional to 684,080.40, 1,026,120.60 and 210,910.80 is: 316,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,080.40 : 1,026,120.60 = 210,910.80 : x
  2. Step 2: Convert to fraction form
    684,080.40/1,026,120.60 = 210,910.80/x
  3. Step 3: Cross multiply
    684,080.40x = 1,026,120.60 × 210,910.80
  4. Step 4: Simplify right side
    684,080.40x = 216,419,916,642.48
  5. Step 5: Solve for x
    x = 216,419,916,642.48/684,080.40
  6. Step 6: Final answer
    x = 316,366.20

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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.