Home / 719,291.79-1,078,937.39-213,850.58

Finding the Fourth Proportional to 719,291.79, 1,078,937.39 and 213,850.58

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Solution

The fourth proportional to 719,291.79, 1,078,937.39 and 213,850.58 is: 320,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,291.79 : 1,078,937.39 = 213,850.58 : x
  2. Step 2: Convert to fraction form
    719,291.79/1,078,937.39 = 213,850.58/x
  3. Step 3: Cross multiply
    719,291.79x = 1,078,937.39 × 213,850.58
  4. Step 4: Simplify right side
    719,291.79x = 230,731,382,868.59
  5. Step 5: Solve for x
    x = 230,731,382,868.59/719,291.79
  6. Step 6: Final answer
    x = 320,775.78

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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.