Home / 499,918.32-689,870.34-285,127.56

Finding the Fourth Proportional to 499,918.32, 689,870.34 and 285,127.56

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Solution

The fourth proportional to 499,918.32, 689,870.34 and 285,127.56 is: 393,466.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,918.32 : 689,870.34 = 285,127.56 : x
  2. Step 2: Convert to fraction form
    499,918.32/689,870.34 = 285,127.56/x
  3. Step 3: Cross multiply
    499,918.32x = 689,870.34 × 285,127.56
  4. Step 4: Simplify right side
    499,918.32x = 196,701,046,760.57
  5. Step 5: Solve for x
    x = 196,701,046,760.57/499,918.32
  6. Step 6: Final answer
    x = 393,466.37

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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.