Home / 543,815.40-815,723.10-345,017.10

Finding the Fourth Proportional to 543,815.40, 815,723.10 and 345,017.10

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Solution

The fourth proportional to 543,815.40, 815,723.10 and 345,017.10 is: 517,525.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,815.40 : 815,723.10 = 345,017.10 : x
  2. Step 2: Convert to fraction form
    543,815.40/815,723.10 = 345,017.10/x
  3. Step 3: Cross multiply
    543,815.40x = 815,723.10 × 345,017.10
  4. Step 4: Simplify right side
    543,815.40x = 281,438,418,365.01
  5. Step 5: Solve for x
    x = 281,438,418,365.01/543,815.40
  6. Step 6: Final answer
    x = 517,525.65

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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.