Home / 856,004.30-1,284,006.45-413,636.30

Finding the Fourth Proportional to 856,004.30, 1,284,006.45 and 413,636.30

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Solution

The fourth proportional to 856,004.30, 1,284,006.45 and 413,636.30 is: 620,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,004.30 : 1,284,006.45 = 413,636.30 : x
  2. Step 2: Convert to fraction form
    856,004.30/1,284,006.45 = 413,636.30/x
  3. Step 3: Cross multiply
    856,004.30x = 1,284,006.45 × 413,636.30
  4. Step 4: Simplify right side
    856,004.30x = 531,111,677,154.14
  5. Step 5: Solve for x
    x = 531,111,677,154.14/856,004.30
  6. Step 6: Final answer
    x = 620,454.45

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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.