Home / 578,413.20-867,101.40-515,427.60

Finding the Fourth Proportional to 578,413.20, 867,101.40 and 515,427.60

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Solution

The fourth proportional to 578,413.20, 867,101.40 and 515,427.60 is: 772,679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,413.20 : 867,101.40 = 515,427.60 : x
  2. Step 2: Convert to fraction form
    578,413.20/867,101.40 = 515,427.60/x
  3. Step 3: Cross multiply
    578,413.20x = 867,101.40 × 515,427.60
  4. Step 4: Simplify right side
    578,413.20x = 446,927,993,558.64
  5. Step 5: Solve for x
    x = 446,927,993,558.64/578,413.20
  6. Step 6: Final answer
    x = 772,679.45

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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.