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Finding the Fourth Proportional to 6,405,681.84, 8,839,840.95 and 3,505,072.74

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Solution

The fourth proportional to 6,405,681.84, 8,839,840.95 and 3,505,072.74 is: 4,837,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405,681.84 : 8,839,840.95 = 3,505,072.74 : x
  2. Step 2: Convert to fraction form
    6,405,681.84/8,839,840.95 = 3,505,072.74/x
  3. Step 3: Cross multiply
    6,405,681.84x = 8,839,840.95 × 3,505,072.74
  4. Step 4: Simplify right side
    6,405,681.84x = 30,984,285,539,780.70
  5. Step 5: Solve for x
    x = 30,984,285,539,780.70/6,405,681.84
  6. Step 6: Final answer
    x = 4,837,000.39

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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.