Home / 689,991.40-1,034,987.10-216,724.60

Finding the Fourth Proportional to 689,991.40, 1,034,987.10 and 216,724.60

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Solution

The fourth proportional to 689,991.40, 1,034,987.10 and 216,724.60 is: 325,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,991.40 : 1,034,987.10 = 216,724.60 : x
  2. Step 2: Convert to fraction form
    689,991.40/1,034,987.10 = 216,724.60/x
  3. Step 3: Cross multiply
    689,991.40x = 1,034,987.10 × 216,724.60
  4. Step 4: Simplify right side
    689,991.40x = 224,307,165,252.66
  5. Step 5: Solve for x
    x = 224,307,165,252.66/689,991.40
  6. Step 6: Final answer
    x = 325,086.90

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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.