Home / 7,912,240-10,918,891.20-4,290,570.88

Finding the Fourth Proportional to 7,912,240, 10,918,891.20 and 4,290,570.88

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Solution

The fourth proportional to 7,912,240, 10,918,891.20 and 4,290,570.88 is: 5,920,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912,240 : 10,918,891.20 = 4,290,570.88 : x
  2. Step 2: Convert to fraction form
    7,912,240/10,918,891.20 = 4,290,570.88/x
  3. Step 3: Cross multiply
    7,912,240x = 10,918,891.20 × 4,290,570.88
  4. Step 4: Simplify right side
    7,912,240x = 46,848,276,624,608.25
  5. Step 5: Solve for x
    x = 46,848,276,624,608.25/7,912,240
  6. Step 6: Final answer
    x = 5,920,987.81

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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.