Home / 1,013,431.80-1,520,147.70-413,999.40

Finding the Fourth Proportional to 1,013,431.80, 1,520,147.70 and 413,999.40

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Solution

The fourth proportional to 1,013,431.80, 1,520,147.70 and 413,999.40 is: 620,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,431.80 : 1,520,147.70 = 413,999.40 : x
  2. Step 2: Convert to fraction form
    1,013,431.80/1,520,147.70 = 413,999.40/x
  3. Step 3: Cross multiply
    1,013,431.80x = 1,520,147.70 × 413,999.40
  4. Step 4: Simplify right side
    1,013,431.80x = 629,340,235,711.38
  5. Step 5: Solve for x
    x = 629,340,235,711.38/1,013,431.80
  6. Step 6: Final answer
    x = 620,999.10

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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.