Home / 641,720.07-885,580.70-355,244.94

Finding the Fourth Proportional to 641,720.07, 885,580.70 and 355,244.94

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Solution

The fourth proportional to 641,720.07, 885,580.70 and 355,244.94 is: 490,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,720.07 : 885,580.70 = 355,244.94 : x
  2. Step 2: Convert to fraction form
    641,720.07/885,580.70 = 355,244.94/x
  3. Step 3: Cross multiply
    641,720.07x = 885,580.70 × 355,244.94
  4. Step 4: Simplify right side
    641,720.07x = 314,598,060,860.43
  5. Step 5: Solve for x
    x = 314,598,060,860.43/641,720.07
  6. Step 6: Final answer
    x = 490,241.89

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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.