Home / 578,110.40-865,999.20-400,817.60

Finding the Fourth Proportional to 578,110.40, 865,999.20 and 400,817.60

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Solution

The fourth proportional to 578,110.40, 865,999.20 and 400,817.60 is: 600,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,110.40 : 865,999.20 = 400,817.60 : x
  2. Step 2: Convert to fraction form
    578,110.40/865,999.20 = 400,817.60/x
  3. Step 3: Cross multiply
    578,110.40x = 865,999.20 × 400,817.60
  4. Step 4: Simplify right side
    578,110.40x = 347,107,720,945.92
  5. Step 5: Solve for x
    x = 347,107,720,945.92/578,110.40
  6. Step 6: Final answer
    x = 600,417.71

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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.