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Finding the Fourth Proportional to 697,779.02, 962,958.31 and 391,909.29

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Solution

The fourth proportional to 697,779.02, 962,958.31 and 391,909.29 is: 540,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,779.02 : 962,958.31 = 391,909.29 : x
  2. Step 2: Convert to fraction form
    697,779.02/962,958.31 = 391,909.29/x
  3. Step 3: Cross multiply
    697,779.02x = 962,958.31 × 391,909.29
  4. Step 4: Simplify right side
    697,779.02x = 377,392,302,980.83
  5. Step 5: Solve for x
    x = 377,392,302,980.83/697,779.02
  6. Step 6: Final answer
    x = 540,847.88

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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.