Home / 917,380.80-1,266,027.60-509,484.54

Finding the Fourth Proportional to 917,380.80, 1,266,027.60 and 509,484.54

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Solution

The fourth proportional to 917,380.80, 1,266,027.60 and 509,484.54 is: 703,112.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,380.80 : 1,266,027.60 = 509,484.54 : x
  2. Step 2: Convert to fraction form
    917,380.80/1,266,027.60 = 509,484.54/x
  3. Step 3: Cross multiply
    917,380.80x = 1,266,027.60 × 509,484.54
  4. Step 4: Simplify right side
    917,380.80x = 645,021,489,413.30
  5. Step 5: Solve for x
    x = 645,021,489,413.30/917,380.80
  6. Step 6: Final answer
    x = 703,112.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.