Home / 641,719.40-961,542.30-404,637.80

Finding the Fourth Proportional to 641,719.40, 961,542.30 and 404,637.80

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Solution

The fourth proportional to 641,719.40, 961,542.30 and 404,637.80 is: 606,302.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,719.40 : 961,542.30 = 404,637.80 : x
  2. Step 2: Convert to fraction form
    641,719.40/961,542.30 = 404,637.80/x
  3. Step 3: Cross multiply
    641,719.40x = 961,542.30 × 404,637.80
  4. Step 4: Simplify right side
    641,719.40x = 389,076,360,878.94
  5. Step 5: Solve for x
    x = 389,076,360,878.94/641,719.40
  6. Step 6: Final answer
    x = 606,302.94

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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.