Home / 578,110.40-865,999.20-389,153.60

Finding the Fourth Proportional to 578,110.40, 865,999.20 and 389,153.60

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Solution

The fourth proportional to 578,110.40, 865,999.20 and 389,153.60 is: 582,945.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,110.40 : 865,999.20 = 389,153.60 : x
  2. Step 2: Convert to fraction form
    578,110.40/865,999.20 = 389,153.60/x
  3. Step 3: Cross multiply
    578,110.40x = 865,999.20 × 389,153.60
  4. Step 4: Simplify right side
    578,110.40x = 337,006,706,277.12
  5. Step 5: Solve for x
    x = 337,006,706,277.12/578,110.40
  6. Step 6: Final answer
    x = 582,945.24

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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.