Home / 3,107,402.80-4,661,104.20-978,139.60

Finding the Fourth Proportional to 3,107,402.80, 4,661,104.20 and 978,139.60

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Solution

The fourth proportional to 3,107,402.80, 4,661,104.20 and 978,139.60 is: 1,467,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107,402.80 : 4,661,104.20 = 978,139.60 : x
  2. Step 2: Convert to fraction form
    3,107,402.80/4,661,104.20 = 978,139.60/x
  3. Step 3: Cross multiply
    3,107,402.80x = 4,661,104.20 × 978,139.60
  4. Step 4: Simplify right side
    3,107,402.80x = 4,559,210,597,746.32
  5. Step 5: Solve for x
    x = 4,559,210,597,746.32/3,107,402.80
  6. Step 6: Final answer
    x = 1,467,209.40

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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.