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Finding the Fourth Proportional to 9,991,430.58, 13,788,508.05 and 6,123,204.30

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Solution

The fourth proportional to 9,991,430.58, 13,788,508.05 and 6,123,204.30 is: 8,450,226.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991,430.58 : 13,788,508.05 = 6,123,204.30 : x
  2. Step 2: Convert to fraction form
    9,991,430.58/13,788,508.05 = 6,123,204.30/x
  3. Step 3: Cross multiply
    9,991,430.58x = 13,788,508.05 × 6,123,204.30
  4. Step 4: Simplify right side
    9,991,430.58x = 84,429,851,782,344.61
  5. Step 5: Solve for x
    x = 84,429,851,782,344.61/9,991,430.58
  6. Step 6: Final answer
    x = 8,450,226.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.