Home / 578,399.20-867,080.40-515,413.60

Finding the Fourth Proportional to 578,399.20, 867,080.40 and 515,413.60

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Solution

The fourth proportional to 578,399.20, 867,080.40 and 515,413.60 is: 772,658.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,399.20 : 867,080.40 = 515,413.60 : x
  2. Step 2: Convert to fraction form
    578,399.20/867,080.40 = 515,413.60/x
  3. Step 3: Cross multiply
    578,399.20x = 867,080.40 × 515,413.60
  4. Step 4: Simplify right side
    578,399.20x = 446,905,030,453.44
  5. Step 5: Solve for x
    x = 446,905,030,453.44/578,399.20
  6. Step 6: Final answer
    x = 772,658.45

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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.