Home / 499,582.80-688,584.48-378,685.44

Finding the Fourth Proportional to 499,582.80, 688,584.48 and 378,685.44

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Solution

The fourth proportional to 499,582.80, 688,584.48 and 378,685.44 is: 521,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,582.80 : 688,584.48 = 378,685.44 : x
  2. Step 2: Convert to fraction form
    499,582.80/688,584.48 = 378,685.44/x
  3. Step 3: Cross multiply
    499,582.80x = 688,584.48 × 378,685.44
  4. Step 4: Simplify right side
    499,582.80x = 260,756,916,785.97
  5. Step 5: Solve for x
    x = 260,756,916,785.97/499,582.80
  6. Step 6: Final answer
    x = 521,949.35

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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.