Home / 7,912,260-10,918,918.80-4,290,590.88

Finding the Fourth Proportional to 7,912,260, 10,918,918.80 and 4,290,590.88

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Solution

The fourth proportional to 7,912,260, 10,918,918.80 and 4,290,590.88 is: 5,921,015.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912,260 : 10,918,918.80 = 4,290,590.88 : x
  2. Step 2: Convert to fraction form
    7,912,260/10,918,918.80 = 4,290,590.88/x
  3. Step 3: Cross multiply
    7,912,260x = 10,918,918.80 × 4,290,590.88
  4. Step 4: Simplify right side
    7,912,260x = 46,848,613,422,740.55
  5. Step 5: Solve for x
    x = 46,848,613,422,740.55/7,912,260
  6. Step 6: Final answer
    x = 5,921,015.41

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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.