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Finding the Fourth Proportional to 8,971,615.80, 13,441,385.70 and 5,459,779.80

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Solution

The fourth proportional to 8,971,615.80, 13,441,385.70 and 5,459,779.80 is: 8,179,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,615.80 : 13,441,385.70 = 5,459,779.80 : x
  2. Step 2: Convert to fraction form
    8,971,615.80/13,441,385.70 = 5,459,779.80/x
  3. Step 3: Cross multiply
    8,971,615.80x = 13,441,385.70 × 5,459,779.80
  4. Step 4: Simplify right side
    8,971,615.80x = 73,387,006,128,868.86
  5. Step 5: Solve for x
    x = 73,387,006,128,868.86/8,971,615.80
  6. Step 6: Final answer
    x = 8,179,909.59

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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.