Home / 499,818.27-689,031.81-356,329.20

Finding the Fourth Proportional to 499,818.27, 689,031.81 and 356,329.20

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Solution

The fourth proportional to 499,818.27, 689,031.81 and 356,329.20 is: 491,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,818.27 : 689,031.81 = 356,329.20 : x
  2. Step 2: Convert to fraction form
    499,818.27/689,031.81 = 356,329.20/x
  3. Step 3: Cross multiply
    499,818.27x = 689,031.81 × 356,329.20
  4. Step 4: Simplify right side
    499,818.27x = 245,522,153,631.85
  5. Step 5: Solve for x
    x = 245,522,153,631.85/499,818.27
  6. Step 6: Final answer
    x = 491,222.85

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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.