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Finding the Fourth Proportional to 6,145,978.80, 9,218,968.20 and 4,876,935.60

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Solution

The fourth proportional to 6,145,978.80, 9,218,968.20 and 4,876,935.60 is: 7,315,403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145,978.80 : 9,218,968.20 = 4,876,935.60 : x
  2. Step 2: Convert to fraction form
    6,145,978.80/9,218,968.20 = 4,876,935.60/x
  3. Step 3: Cross multiply
    6,145,978.80x = 9,218,968.20 × 4,876,935.60
  4. Step 4: Simplify right side
    6,145,978.80x = 44,960,314,209,847.91
  5. Step 5: Solve for x
    x = 44,960,314,209,847.91/6,145,978.80
  6. Step 6: Final answer
    x = 7,315,403.40

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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.