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Finding the Fourth Proportional to 8,971,608.40, 13,457,412.60 and 4,188,639.40

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Solution

The fourth proportional to 8,971,608.40, 13,457,412.60 and 4,188,639.40 is: 6,282,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,608.40 : 13,457,412.60 = 4,188,639.40 : x
  2. Step 2: Convert to fraction form
    8,971,608.40/13,457,412.60 = 4,188,639.40/x
  3. Step 3: Cross multiply
    8,971,608.40x = 13,457,412.60 × 4,188,639.40
  4. Step 4: Simplify right side
    8,971,608.40x = 56,368,248,638,416.44
  5. Step 5: Solve for x
    x = 56,368,248,638,416.44/8,971,608.40
  6. Step 6: Final answer
    x = 6,282,959.10

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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.