Home / 1,314,207.20-1,971,310.80-472,786.40

Finding the Fourth Proportional to 1,314,207.20, 1,971,310.80 and 472,786.40

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Solution

The fourth proportional to 1,314,207.20, 1,971,310.80 and 472,786.40 is: 709,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,207.20 : 1,971,310.80 = 472,786.40 : x
  2. Step 2: Convert to fraction form
    1,314,207.20/1,971,310.80 = 472,786.40/x
  3. Step 3: Cross multiply
    1,314,207.20x = 1,971,310.80 × 472,786.40
  4. Step 4: Simplify right side
    1,314,207.20x = 932,008,936,413.12
  5. Step 5: Solve for x
    x = 932,008,936,413.12/1,314,207.20
  6. Step 6: Final answer
    x = 709,179.60

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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.