Home / 641,667.26-885,490.10-355,181.20

Finding the Fourth Proportional to 641,667.26, 885,490.10 and 355,181.20

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Solution

The fourth proportional to 641,667.26, 885,490.10 and 355,181.20 is: 490,144.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,667.26 : 885,490.10 = 355,181.20 : x
  2. Step 2: Convert to fraction form
    641,667.26/885,490.10 = 355,181.20/x
  3. Step 3: Cross multiply
    641,667.26x = 885,490.10 × 355,181.20
  4. Step 4: Simplify right side
    641,667.26x = 314,509,436,306.12
  5. Step 5: Solve for x
    x = 314,509,436,306.12/641,667.26
  6. Step 6: Final answer
    x = 490,144.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.