Home / 856,001.80-1,284,002.70-413,633.80

Finding the Fourth Proportional to 856,001.80, 1,284,002.70 and 413,633.80

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Solution

The fourth proportional to 856,001.80, 1,284,002.70 and 413,633.80 is: 620,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,001.80 : 1,284,002.70 = 413,633.80 : x
  2. Step 2: Convert to fraction form
    856,001.80/1,284,002.70 = 413,633.80/x
  3. Step 3: Cross multiply
    856,001.80x = 1,284,002.70 × 413,633.80
  4. Step 4: Simplify right side
    856,001.80x = 531,106,916,011.26
  5. Step 5: Solve for x
    x = 531,106,916,011.26/856,001.80
  6. Step 6: Final answer
    x = 620,450.70

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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.