Home / 769,430.05-1,061,942.63-520,959.31

Finding the Fourth Proportional to 769,430.05, 1,061,942.63 and 520,959.31

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Solution

The fourth proportional to 769,430.05, 1,061,942.63 and 520,959.31 is: 719,011.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,430.05 : 1,061,942.63 = 520,959.31 : x
  2. Step 2: Convert to fraction form
    769,430.05/1,061,942.63 = 520,959.31/x
  3. Step 3: Cross multiply
    769,430.05x = 1,061,942.63 × 520,959.31
  4. Step 4: Simplify right side
    769,430.05x = 553,228,894,524.73
  5. Step 5: Solve for x
    x = 553,228,894,524.73/769,430.05
  6. Step 6: Final answer
    x = 719,011.29

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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.