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Finding the Fourth Proportional to 18,397,323.20, 27,595,984.80 and 6,280,468.40

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Solution

The fourth proportional to 18,397,323.20, 27,595,984.80 and 6,280,468.40 is: 9,420,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397,323.20 : 27,595,984.80 = 6,280,468.40 : x
  2. Step 2: Convert to fraction form
    18,397,323.20/27,595,984.80 = 6,280,468.40/x
  3. Step 3: Cross multiply
    18,397,323.20x = 27,595,984.80 × 6,280,468.40
  4. Step 4: Simplify right side
    18,397,323.20x = 173,315,710,503,280.34
  5. Step 5: Solve for x
    x = 173,315,710,503,280.34/18,397,323.20
  6. Step 6: Final answer
    x = 9,420,702.60

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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.