Home / 442,923.40-664,385.10-411,430.60

Finding the Fourth Proportional to 442,923.40, 664,385.10 and 411,430.60

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Solution

The fourth proportional to 442,923.40, 664,385.10 and 411,430.60 is: 617,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,923.40 : 664,385.10 = 411,430.60 : x
  2. Step 2: Convert to fraction form
    442,923.40/664,385.10 = 411,430.60/x
  3. Step 3: Cross multiply
    442,923.40x = 664,385.10 × 411,430.60
  4. Step 4: Simplify right side
    442,923.40x = 273,348,360,324.06
  5. Step 5: Solve for x
    x = 273,348,360,324.06/442,923.40
  6. Step 6: Final answer
    x = 617,145.90

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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.