Home / 715,109.40-1,072,664.10-378,019.80

Finding the Fourth Proportional to 715,109.40, 1,072,664.10 and 378,019.80

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Solution

The fourth proportional to 715,109.40, 1,072,664.10 and 378,019.80 is: 567,029.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,109.40 : 1,072,664.10 = 378,019.80 : x
  2. Step 2: Convert to fraction form
    715,109.40/1,072,664.10 = 378,019.80/x
  3. Step 3: Cross multiply
    715,109.40x = 1,072,664.10 × 378,019.80
  4. Step 4: Simplify right side
    715,109.40x = 405,488,268,549.18
  5. Step 5: Solve for x
    x = 405,488,268,549.18/715,109.40
  6. Step 6: Final answer
    x = 567,029.70

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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.