Home / 579,220.40-869,413.80-279,941.60

Finding the Fourth Proportional to 579,220.40, 869,413.80 and 279,941.60

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Solution

The fourth proportional to 579,220.40, 869,413.80 and 279,941.60 is: 420,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,220.40 : 869,413.80 = 279,941.60 : x
  2. Step 2: Convert to fraction form
    579,220.40/869,413.80 = 279,941.60/x
  3. Step 3: Cross multiply
    579,220.40x = 869,413.80 × 279,941.60
  4. Step 4: Simplify right side
    579,220.40x = 243,385,090,234.08
  5. Step 5: Solve for x
    x = 243,385,090,234.08/579,220.40
  6. Step 6: Final answer
    x = 420,194.26

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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.