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Finding the Fourth Proportional to 7,773,778.71, 11,649,707.01 and 3,670,721.96

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Solution

The fourth proportional to 7,773,778.71, 11,649,707.01 and 3,670,721.96 is: 5,500,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,773,778.71 : 11,649,707.01 = 3,670,721.96 : x
  2. Step 2: Convert to fraction form
    7,773,778.71/11,649,707.01 = 3,670,721.96/x
  3. Step 3: Cross multiply
    7,773,778.71x = 11,649,707.01 × 3,670,721.96
  4. Step 4: Simplify right side
    7,773,778.71x = 42,762,835,290,924.41
  5. Step 5: Solve for x
    x = 42,762,835,290,924.41/7,773,778.71
  6. Step 6: Final answer
    x = 5,500,907.20

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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.