Home / 918,180.60-1,377,270.90-318,942.60

Finding the Fourth Proportional to 918,180.60, 1,377,270.90 and 318,942.60

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Solution

The fourth proportional to 918,180.60, 1,377,270.90 and 318,942.60 is: 478,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,180.60 : 1,377,270.90 = 318,942.60 : x
  2. Step 2: Convert to fraction form
    918,180.60/1,377,270.90 = 318,942.60/x
  3. Step 3: Cross multiply
    918,180.60x = 1,377,270.90 × 318,942.60
  4. Step 4: Simplify right side
    918,180.60x = 439,270,361,750.34
  5. Step 5: Solve for x
    x = 439,270,361,750.34/918,180.60
  6. Step 6: Final answer
    x = 478,413.90

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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.