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Finding the Fourth Proportional to 528,076.30, 792,114.45 and 509,413.90

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Solution

The fourth proportional to 528,076.30, 792,114.45 and 509,413.90 is: 764,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,076.30 : 792,114.45 = 509,413.90 : x
  2. Step 2: Convert to fraction form
    528,076.30/792,114.45 = 509,413.90/x
  3. Step 3: Cross multiply
    528,076.30x = 792,114.45 × 509,413.90
  4. Step 4: Simplify right side
    528,076.30x = 403,514,111,220.86
  5. Step 5: Solve for x
    x = 403,514,111,220.86/528,076.30
  6. Step 6: Final answer
    x = 764,120.85

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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.