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Finding the Fourth Proportional to 8,915,271.80, 13,372,907.70 and 5,724,001.40

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Solution

The fourth proportional to 8,915,271.80, 13,372,907.70 and 5,724,001.40 is: 8,586,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915,271.80 : 13,372,907.70 = 5,724,001.40 : x
  2. Step 2: Convert to fraction form
    8,915,271.80/13,372,907.70 = 5,724,001.40/x
  3. Step 3: Cross multiply
    8,915,271.80x = 13,372,907.70 × 5,724,001.40
  4. Step 4: Simplify right side
    8,915,271.80x = 76,546,542,396,870.78
  5. Step 5: Solve for x
    x = 76,546,542,396,870.78/8,915,271.80
  6. Step 6: Final answer
    x = 8,586,002.10

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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.