Home / 687,744.87-947,126.07-496,455.27

Finding the Fourth Proportional to 687,744.87, 947,126.07 and 496,455.27

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Solution

The fourth proportional to 687,744.87, 947,126.07 and 496,455.27 is: 683,692.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744.87 : 947,126.07 = 496,455.27 : x
  2. Step 2: Convert to fraction form
    687,744.87/947,126.07 = 496,455.27/x
  3. Step 3: Cross multiply
    687,744.87x = 947,126.07 × 496,455.27
  4. Step 4: Simplify right side
    687,744.87x = 470,205,728,805.89
  5. Step 5: Solve for x
    x = 470,205,728,805.89/687,744.87
  6. Step 6: Final answer
    x = 683,692.09

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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.