Home / 499,855.04-689,782.79-285,064.23

Finding the Fourth Proportional to 499,855.04, 689,782.79 and 285,064.23

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Solution

The fourth proportional to 499,855.04, 689,782.79 and 285,064.23 is: 393,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,855.04 : 689,782.79 = 285,064.23 : x
  2. Step 2: Convert to fraction form
    499,855.04/689,782.79 = 285,064.23/x
  3. Step 3: Cross multiply
    499,855.04x = 689,782.79 × 285,064.23
  4. Step 4: Simplify right side
    499,855.04x = 196,632,398,473.28
  5. Step 5: Solve for x
    x = 196,632,398,473.28/499,855.04
  6. Step 6: Final answer
    x = 393,378.85

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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.