Home / 719,305.42-1,078,957.82-213,864.20

Finding the Fourth Proportional to 719,305.42, 1,078,957.82 and 213,864.20

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Solution

The fourth proportional to 719,305.42, 1,078,957.82 and 213,864.20 is: 320,796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,305.42 : 1,078,957.82 = 213,864.20 : x
  2. Step 2: Convert to fraction form
    719,305.42/1,078,957.82 = 213,864.20/x
  3. Step 3: Cross multiply
    719,305.42x = 1,078,957.82 × 213,864.20
  4. Step 4: Simplify right side
    719,305.42x = 230,750,454,240.10
  5. Step 5: Solve for x
    x = 230,750,454,240.10/719,305.42
  6. Step 6: Final answer
    x = 320,796.21

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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.