Home / 7,178,973.90-9,907,014.96-3,915,858.78

Finding the Fourth Proportional to 7,178,973.90, 9,907,014.96 and 3,915,858.78

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Solution

The fourth proportional to 7,178,973.90, 9,907,014.96 and 3,915,858.78 is: 5,403,902.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,973.90 : 9,907,014.96 = 3,915,858.78 : x
  2. Step 2: Convert to fraction form
    7,178,973.90/9,907,014.96 = 3,915,858.78/x
  3. Step 3: Cross multiply
    7,178,973.90x = 9,907,014.96 × 3,915,858.78
  4. Step 4: Simplify right side
    7,178,973.90x = 38,794,471,514,707.35
  5. Step 5: Solve for x
    x = 38,794,471,514,707.35/7,178,973.90
  6. Step 6: Final answer
    x = 5,403,902.01

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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.