Home / 678,233.30-1,017,349.95-412,514.90

Finding the Fourth Proportional to 678,233.30, 1,017,349.95 and 412,514.90

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Solution

The fourth proportional to 678,233.30, 1,017,349.95 and 412,514.90 is: 618,772.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,233.30 : 1,017,349.95 = 412,514.90 : x
  2. Step 2: Convert to fraction form
    678,233.30/1,017,349.95 = 412,514.90/x
  3. Step 3: Cross multiply
    678,233.30x = 1,017,349.95 × 412,514.90
  4. Step 4: Simplify right side
    678,233.30x = 419,672,012,889.26
  5. Step 5: Solve for x
    x = 419,672,012,889.26/678,233.30
  6. Step 6: Final answer
    x = 618,772.35

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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.