Home / 678,152.20-1,017,228.30-394,328.20

Finding the Fourth Proportional to 678,152.20, 1,017,228.30 and 394,328.20

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Solution

The fourth proportional to 678,152.20, 1,017,228.30 and 394,328.20 is: 591,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,152.20 : 1,017,228.30 = 394,328.20 : x
  2. Step 2: Convert to fraction form
    678,152.20/1,017,228.30 = 394,328.20/x
  3. Step 3: Cross multiply
    678,152.20x = 1,017,228.30 × 394,328.20
  4. Step 4: Simplify right side
    678,152.20x = 401,121,804,528.06
  5. Step 5: Solve for x
    x = 401,121,804,528.06/678,152.20
  6. Step 6: Final answer
    x = 591,492.30

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Half scale
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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.