Home / 721,651.40-1,082,477.10-347,712.20

Finding the Fourth Proportional to 721,651.40, 1,082,477.10 and 347,712.20

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Solution

The fourth proportional to 721,651.40, 1,082,477.10 and 347,712.20 is: 521,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,651.40 : 1,082,477.10 = 347,712.20 : x
  2. Step 2: Convert to fraction form
    721,651.40/1,082,477.10 = 347,712.20/x
  3. Step 3: Cross multiply
    721,651.40x = 1,082,477.10 × 347,712.20
  4. Step 4: Simplify right side
    721,651.40x = 376,390,493,890.62
  5. Step 5: Solve for x
    x = 376,390,493,890.62/721,651.40
  6. Step 6: Final answer
    x = 521,568.30

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Half scale
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Double scale
Find fourth proportional to 721,652.40, 1,082,478.60 and 347,713.20
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.