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Finding the Fourth Proportional to 7,242,651.60, 10,865,289.60 and 3,639,350.40

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Solution

The fourth proportional to 7,242,651.60, 10,865,289.60 and 3,639,350.40 is: 5,459,684.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242,651.60 : 10,865,289.60 = 3,639,350.40 : x
  2. Step 2: Convert to fraction form
    7,242,651.60/10,865,289.60 = 3,639,350.40/x
  3. Step 3: Cross multiply
    7,242,651.60x = 10,865,289.60 × 3,639,350.40
  4. Step 4: Simplify right side
    7,242,651.60x = 39,542,596,051,875.84
  5. Step 5: Solve for x
    x = 39,542,596,051,875.84/7,242,651.60
  6. Step 6: Final answer
    x = 5,459,684.97

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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.