Home / 678,346.30-1,017,542.28-341,203.14

Finding the Fourth Proportional to 678,346.30, 1,017,542.28 and 341,203.14

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Solution

The fourth proportional to 678,346.30, 1,017,542.28 and 341,203.14 is: 511,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,346.30 : 1,017,542.28 = 341,203.14 : x
  2. Step 2: Convert to fraction form
    678,346.30/1,017,542.28 = 341,203.14/x
  3. Step 3: Cross multiply
    678,346.30x = 1,017,542.28 × 341,203.14
  4. Step 4: Simplify right side
    678,346.30x = 347,188,621,018.76
  5. Step 5: Solve for x
    x = 347,188,621,018.76/678,346.30
  6. Step 6: Final answer
    x = 511,816.19

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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.