Home / 685,891.40-1,028,837.10-446,742.95

Finding the Fourth Proportional to 685,891.40, 1,028,837.10 and 446,742.95

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Solution

The fourth proportional to 685,891.40, 1,028,837.10 and 446,742.95 is: 670,114.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,891.40 : 1,028,837.10 = 446,742.95 : x
  2. Step 2: Convert to fraction form
    685,891.40/1,028,837.10 = 446,742.95/x
  3. Step 3: Cross multiply
    685,891.40x = 1,028,837.10 × 446,742.95
  4. Step 4: Simplify right side
    685,891.40x = 459,625,721,123.45
  5. Step 5: Solve for x
    x = 459,625,721,123.45/685,891.40
  6. Step 6: Final answer
    x = 670,114.43

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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.